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Ubuntu Security Notice USN-5686-3

Ubuntu Security Notice 5686-3 - USN-5686-1 fixed vulnerabilities in Git. This update provides the corresponding updates for Ubuntu 22.10. Cory Snider discovered that Git incorrectly handled certain symbolic links. An attacker could possibly use this issue to cause an unexpected behaviour.

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==========================================================================Ubuntu Security Notice USN-5686-3November 21, 2022git vulnerabilities==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 22.10Summary:Several security issues were fixed in Git.Software Description:- git: fast, scalable, distributed revision control systemDetails:USN-5686-1 fixed vulnerabilities in Git. This update provides the correspondingupdates for Ubuntu 22.10.Original advisory details: Cory Snider discovered that Git incorrectly handled certain symbolic links. An attacker could possibly use this issue to cause an unexpected behaviour. (CVE-2022-39253) Kevin Backhouse discovered that Git incorrectly handled certain command strings. An attacker could possibly use this issue to arbitrary code execution. (CVE-2022-39260)Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 22.10:  git                             1:2.37.2-1ubuntu1.1In general, a standard system update will make all the necessary changes.References:  https://ubuntu.com/security/notices/USN-5686-3  https://ubuntu.com/security/notices/USN-5686-1  CVE-2022-39253, CVE-2022-39260Package Information:  https://launchpad.net/ubuntu/+source/git/1:2.37.2-1ubuntu1.1

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CVE-2022-39253: Local clone optimization dereferences symbolic links by default

Git is an open source, scalable, distributed revision control system. Versions prior to 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4 are subject to exposure of sensitive information to a malicious actor. When performing a local clone (where the source and target of the clone are on the same volume), Git copies the contents of the source's `$GIT_DIR/objects` directory into the destination by either creating hardlinks to the source contents, or copying them (if hardlinks are disabled via `--no-hardlinks`). A malicious actor could convince a victim to clone a repository with a symbolic link pointing at sensitive information on the victim's machine. This can be done either by having the victim clone a malicious repository on the same machine, or having them clone a malicious repository embedded as a bare repository via a submodule from any source, provided they clone with the `--recurse-submodules` option. Git does not create symbolic links in the `$GIT_DIR/objects` d...

Ubuntu Security Notice USN-5686-1

Ubuntu Security Notice 5686-1 - Cory Snider discovered that Git incorrectly handled certain symbolic links. An attacker could possibly use this issue to cause an unexpected behaviour. Kevin Backhouse discovered that Git incorrectly handled certain command strings. An attacker could possibly use this issue to arbitrary code execution.

Ubuntu Security Notice USN-5686-1

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