Описание
Security update for git
This update for git fixes the following issues:
- CVE-2023-22490: Fixed incorrectly usable local clone optimization even when using a non-local transport (bsc#1208027).
- CVE-2023-23946: Fixed issue where a path outside the working tree can be overwritten as the user who is running 'git apply' (bsc#1208028).
- CVE-2022-39260: Fixed overflow in
split_cmdline(), leading to arbitrary heap writes and remote code execution (bsc#1204456). - CVE-2022-39253: Fixed dereference issue with symbolic links via the
--localclone mechanism (bsc#1204455).
Список пакетов
SUSE Enterprise Storage 7
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS
SUSE Linux Enterprise Server 15 SP1-LTSS
SUSE Linux Enterprise Server 15 SP2-LTSS
SUSE Linux Enterprise Server for SAP Applications 15 SP1
SUSE Linux Enterprise Server for SAP Applications 15 SP2
Ссылки
- Link for SUSE-SU-2023:0418-1
- E-Mail link for SUSE-SU-2023:0418-1
- SUSE Security Ratings
- SUSE Bug 1204455
- SUSE Bug 1204456
- SUSE Bug 1208027
- SUSE Bug 1208028
- SUSE CVE CVE-2022-39253 page
- SUSE CVE CVE-2022-39260 page
- SUSE CVE CVE-2023-22490 page
- SUSE CVE CVE-2023-23946 page
Описание
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` directory. The problem has been patched in the versions published on 2022-10-18, and backported to v2.30.x. Potential workarounds: Avoid cloning untrusted repositories using the `--local` optimization when on a shared machine, either by passing the `--no-local` option to `git clone` or cloning from a URL that uses the `file://` scheme. Alternatively, avoid cloning repositories from untrusted sources with `--recurse-submodules` or run `git config --global protocol.file.allow user`.
Затронутые продукты
Ссылки
- CVE-2022-39253
- SUSE Bug 1204455
- SUSE Bug 1204456
- SUSE Bug 1208027
Описание
Git is an open source, scalable, distributed revision control system. `git shell` is a restricted login shell that can be used to implement Git's push/pull functionality via SSH. In 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, the function that splits the command arguments into an array improperly uses an `int` to represent the number of entries in the array, allowing a malicious actor to intentionally overflow the return value, leading to arbitrary heap writes. Because the resulting array is then passed to `execv()`, it is possible to leverage this attack to gain remote code execution on a victim machine. Note that a victim must first allow access to `git shell` as a login shell in order to be vulnerable to this attack. This problem is patched in versions 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 and users are advised to upgrade to the latest version. Disabling `git shell` access via remote logins is a viable short-term workaround.
Затронутые продукты
Ссылки
- CVE-2022-39260
- SUSE Bug 1204456
Описание
Git is a revision control system. Using a specially-crafted repository, Git prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8 can be tricked into using its local clone optimization even when using a non-local transport. Though Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, the `objects` directory itself may still be a symbolic link. These two may be combined to include arbitrary files based on known paths on the victim's filesystem within the malicious repository's working copy, allowing for data exfiltration in a similar manner as CVE-2022-39253. A fix has been prepared and will appear in v2.39.2 v2.38.4 v2.37.6 v2.36.5 v2.35.7 v2.34.7 v2.33.7 v2.32.6, v2.31.7 and v2.30.8. If upgrading is impractical, two short-term workarounds are available. Avoid cloning repositories from untrusted sources with `--recurse-submodules`. Instead, consider cloning repositories without recursively cloning their submodules, and instead run `git submodule update` at each layer. Before doing so, inspect each new `.gitmodules` file to ensure that it does not contain suspicious module URLs.
Затронутые продукты
Ссылки
- CVE-2023-22490
- SUSE Bug 1208027
Описание
Git, a revision control system, is vulnerable to path traversal prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8. By feeding a crafted input to `git apply`, a path outside the working tree can be overwritten as the user who is running `git apply`. A fix has been prepared and will appear in v2.39.2, v2.38.4, v2.37.6, v2.36.5, v2.35.7, v2.34.7, v2.33.7, v2.32.6, v2.31.7, and v2.30.8. As a workaround, use `git apply --stat` to inspect a patch before applying; avoid applying one that creates a symbolic link and then creates a file beyond the symbolic link.
Затронутые продукты
Ссылки
- CVE-2023-23946
- SUSE Bug 1208028