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Red Hat Security Advisory 2023-7139-01
Red Hat Security Advisory 2023-7139-01 - An update for samba, evolution-mapi, and openchangeis now available for Red Hat Enterprise Linux 8. Issues addressed include out of bounds read and path disclosure vulnerabilities.
The following data is constructed from data provided by Red Hat's json file at:https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_7139.jsonRed Hat officially shut down their mailing list notifications October 10, 2023. Due to this, Packet Storm has recreated the below data as a reference point to raise awareness. It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.- Packet Storm Staff====================================================================Red Hat Security AdvisorySynopsis: Moderate: samba security, bug fix, and enhancement updateAdvisory ID: RHSA-2023:7139-01Product: Red Hat Enterprise LinuxAdvisory URL: https://access.redhat.com/errata/RHSA-2023:7139Issue date: 2023-11-14Revision: 01CVE Names: CVE-2022-2127====================================================================Summary: An update for samba, evolution-mapi, and openchangeis now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.Description:Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information.The following packages have been upgraded to a later upstream version: samba (4.18.6). (BZ#2190417)Security Fix(es):* samba: out-of-bounds read in winbind AUTH_CRAP (CVE-2022-2127)* samba: infinite loop in mdssvc RPC service for spotlight (CVE-2023-34966)* samba: type confusion in mdssvc RPC service for spotlight (CVE-2023-34967)* samba: spotlight server-side share path disclosure (CVE-2023-34968)For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.Additional Changes:For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.9 Release Notes linked from the References section.Solution:https://access.redhat.com/articles/11258CVEs:CVE-2022-2127References:https://access.redhat.com/security/updates/classification/#moderatehttps://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.9_release_notes/indexhttps://bugzilla.redhat.com/show_bug.cgi?id=2175385https://bugzilla.redhat.com/show_bug.cgi?id=2190417https://bugzilla.redhat.com/show_bug.cgi?id=2218237https://bugzilla.redhat.com/show_bug.cgi?id=2221594https://bugzilla.redhat.com/show_bug.cgi?id=2221600https://bugzilla.redhat.com/show_bug.cgi?id=2222791https://bugzilla.redhat.com/show_bug.cgi?id=2222793https://bugzilla.redhat.com/show_bug.cgi?id=2222794https://bugzilla.redhat.com/show_bug.cgi?id=2222795https://bugzilla.redhat.com/show_bug.cgi?id=2222884https://bugzilla.redhat.com/show_bug.cgi?id=2232564Related news
Red Hat Security Advisory 2024-4101-03 - An update for samba is now available for Red Hat Enterprise Linux 9.2 Extended Update Support.
Gentoo Linux Security Advisory 202402-28 - Multiple vulnerabilities have been discovered in Samba, the worst of which can lead to remote code execution. Versions greater than or equal to 4.18.9 are affected.
A Type Confusion vulnerability was found in the Spotlight RPC functions in afpd in Netatalk 3.1.x before 3.1.17. When parsing Spotlight RPC packets, one encoded data structure is a key-value style dictionary where the keys are character strings, and the values can be any of the supported types in the underlying protocol. Due to a lack of type checking in callers of the dalloc_value_for_key() function, which returns the object associated with a key, a malicious actor may be able to fully control the value of the pointer and theoretically achieve Remote Code Execution on the host. This issue is similar to CVE-2023-34967.
Debian Linux Security Advisory 5477-1 - Several vulnerabilities have been discovered in Samba, which could result in information disclosure, denial of service or insufficient enforcement of security-relevant config directives.
Debian Linux Security Advisory 5477-1 - Several vulnerabilities have been discovered in Samba, which could result in information disclosure, denial of service or insufficient enforcement of security-relevant config directives.
Debian Linux Security Advisory 5477-1 - Several vulnerabilities have been discovered in Samba, which could result in information disclosure, denial of service or insufficient enforcement of security-relevant config directives.
Debian Linux Security Advisory 5477-1 - Several vulnerabilities have been discovered in Samba, which could result in information disclosure, denial of service or insufficient enforcement of security-relevant config directives.
An out-of-bounds read vulnerability was found in Samba due to insufficient length checks in winbindd_pam_auth_crap.c. When performing NTLM authentication, the client replies to cryptographic challenges back to the server. These replies have variable lengths, and Winbind fails to check the lan manager response length. When Winbind is used for NTLM authentication, a maliciously crafted request can trigger an out-of-bounds read in Winbind, possibly resulting in a crash.
A path disclosure vulnerability was found in Samba. As part of the Spotlight protocol, Samba discloses the server-side absolute path of shares, files, and directories in the results for search queries. This flaw allows a malicious client or an attacker with a targeted RPC request to view the information that is part of the disclosed path.
An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.
A Type Confusion vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets, one encoded data structure is a key-value style dictionary where the keys are character strings, and the values can be any of the supported types in the mdssvc protocol. Due to a lack of type checking in callers of the dalloc_value_for_key() function, which returns the object associated with a key, a caller may trigger a crash in talloc_get_size() when talloc detects that the passed-in pointer is not a valid talloc pointer. With an RPC worker process shared among multiple client connections, a malicious client or attacker can trigger a process crash in a shared RPC mdssvc worker process, affecting all other clients this worker serves.