Critical Security Vulnerabilities in Curl Patched, Users Advised to Upgrade

Red Hat Security Advisory 2024-1601-03 - An update for curl is now available for Red Hat Enterprise Linux 8. Issues addressed include an information leakage vulnerability.

Apple Security Advisory 01-22-2024-6 - macOS Ventura 13.6.4 addresses bypass and code execution vulnerabilities.

Apple Security Advisory 01-22-2024-3 - iOS 16.7.5 and iPadOS 16.7.5 addresses code execution vulnerabilities.

Red Hat Security Advisory 2023-7625-03 - An update is now available for Red Hat JBoss Core Services. Issues addressed include buffer overflow, denial of service, and information leakage vulnerabilities.

An issue exists in SoftIron HyperCloud where compute nodes may come online immediately without following the correct initialization process.  In this instance, workloads may be scheduled on these nodes and deploy to a failed or erroneous state, which impacts the availability of these workloads that may be deployed during this time window. This issue impacts HyperCloud versions from 2.0.0 to before 2.0.3.

Red Hat Security Advisory 2023-7540-01 - An update for curl is now available for Red Hat Enterprise Linux 8.8 Extended Update Support.

Microsoft has released fixes to address 63 security bugs in its software for the month of November 2023, including three vulnerabilities that have come under active exploitation in the wild. Of the 63 flaws, three are rated Critical, 56 are rated Important, and four are rated Moderate in severity. Two of them have been listed as publicly known at the time of the release. The updates are in

A privilege escalation flaw was found in the node restriction admission plugin of the kubernetes api server of OpenShift. A remote attacker who modifies the node role label could steer workloads from the control plane and etcd nodes onto different worker nodes and gain broader access to the cluster.

This flaw makes curl overflow a heap based buffer in the SOCKS5 proxy handshake. When curl is asked to pass along the host name to the SOCKS5 proxy to allow that to resolve the address instead of it getting done by curl itself, the maximum length that host name can be is 255 bytes. If the host name is detected to be longer, curl switches to local name resolving and instead passes on the resolved address only. Due to this bug, the local variable that means "let the host resolve the name" could get the wrong value during a slow SOCKS5 handshake, and contrary to the intention, copy the too long host name to the target buffer instead of copying just the resolved address there. The target buffer being a heap based buffer, and the host name coming from the URL that curl has been told to operate with.

This flaw allows an attacker to insert cookies at will into a running program using libcurl, if the specific series of conditions are met. libcurl performs transfers. In its API, an application creates "easy handles" that are the individual handles for single transfers. libcurl provides a function call that duplicates en easy handle called [curl_easy_duphandle](https://curl.se/libcurl/c/curl_easy_duphandle.html). If a transfer has cookies enabled when the handle is duplicated, the cookie-enable state is also cloned - but without cloning the actual cookies. If the source handle did not read any cookies from a specific file on disk, the cloned version of the handle would instead store the file name as `none` (using the four ASCII letters, no quotes). Subsequent use of the cloned handle that does not explicitly set a source to load cookies from would then inadvertently load cookies from a file named `none` - if such a file exists and is readable in the current directory of the program...

Vulnerability in the Sun ZFS Storage Appliance product of Oracle Systems (component: Core). The supported version that is affected is 8.8.60. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Sun ZFS Storage Appliance. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Sun ZFS Storage Appliance. CVSS 3.1 Base Score 5.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).

Ubuntu Security Notice 6429-3 - USN-6429-1 fixed vulnerabilities in curl. This update provides the corresponding updates for Ubuntu 23.10. Jay Satiro discovered that curl incorrectly handled hostnames when using a SOCKS5 proxy. In environments where curl is configured to use a SOCKS5 proxy, a remote attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 22.04 LTS, and Ubuntu 23.04. It was discovered that curl incorrectly handled cookies when an application duplicated certain handles. A local attacker could possibly create a cookie file and inject arbitrary cookies into subsequent connections.

Red Hat Security Advisory 2023-5763-01 - The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP. Issues addressed include a buffer overflow vulnerability.

Red Hat Security Advisory 2023-5700-01 - The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP. Issues addressed include a buffer overflow vulnerability.

This Tech Tip outlines how enterprise defenders can mitigate the risks of the curl and libcurl vulnerabilities in their environments.

Ubuntu Security Notice 6429-2 - USN-6429-1 fixed a vulnerability in curl. This update provides the corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. It was discovered that curl incorrectly handled cookies when an application duplicated certain handles. A local attacker could possibly create a cookie file and inject arbitrary cookies into subsequent connections.

Patches have been released for two security flaws impacting the Curl data transfer library, the most severe of which could potentially result in code execution. The list of vulnerabilities is as follows - CVE-2023-38545 (CVSS score: 7.5) - SOCKS5 heap-based buffer overflow vulnerability CVE-2023-38546 (CVSS score: 5.0) - Cookie injection with none file CVE-2023-38545 is the more severe of the

Patches have been released for two security flaws impacting the Curl data transfer library, the most severe of which could potentially result in code execution. The list of vulnerabilities is as follows - CVE-2023-38545 (CVSS score: 7.5) - SOCKS5 heap-based buffer overflow vulnerability CVE-2023-38546 (CVSS score: 5.0) - Cookie injection with none file CVE-2023-38545 is the more severe of the

Touted for days as potentially catastrophic, the curl flaws only impact a narrow set of deployments.

Gentoo Linux Security Advisory 202310-12 - Multiple vulnerabilities have been discovered in curl, the worst of which could result in arbitrary code execution. Versions greater than or equal to 8.3.0-r2 are affected.

Gentoo Linux Security Advisory 202310-12 - Multiple vulnerabilities have been discovered in curl, the worst of which could result in arbitrary code execution. Versions greater than or equal to 8.3.0-r2 are affected.

Debian Linux Security Advisory 5523-1 - Two security issues were found in Curl, an easy-to-use client-side URL transfer library and command line tool.

Debian Linux Security Advisory 5523-1 - Two security issues were found in Curl, an easy-to-use client-side URL transfer library and command line tool.

Ubuntu Security Notice 6429-1 - Jay Satiro discovered that curl incorrectly handled hostnames when using a SOCKS5 proxy. In environments where curl is configured to use a SOCKS5 proxy, a remote attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 22.04 LTS, and Ubuntu 23.04. It was discovered that curl incorrectly handled cookies when an application duplicated certain handles. A local attacker could possibly create a cookie file and inject arbitrary cookies into subsequent connections.

Ubuntu Security Notice 6429-1 - Jay Satiro discovered that curl incorrectly handled hostnames when using a SOCKS5 proxy. In environments where curl is configured to use a SOCKS5 proxy, a remote attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 22.04 LTS, and Ubuntu 23.04. It was discovered that curl incorrectly handled cookies when an application duplicated certain handles. A local attacker could possibly create a cookie file and inject arbitrary cookies into subsequent connections.

The maintainers of the Curl library have released an advisory warning of two forthcoming security vulnerabilities that are expected to be addressed as part of updates released on October 11, 2023. This includes a high severity and a low-severity flaw tracked under the identifiers CVE-2023-38545 and CVE-2023-38546, respectively. Additional details about the issues and the exact version ranges

The maintainers of the Curl library have released an advisory warning of two forthcoming security vulnerabilities that are expected to be addressed as part of updates released on October 11, 2023. This includes a high severity and a low-severity flaw tracked under the identifiers CVE-2023-38545 and CVE-2023-38546, respectively. Additional details about the issues and the exact version ranges