CVE - CVE-2021-21300

CVE-ID
CVE-2021-21300	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Git is an open-source distributed revision control system. In affected versions of Git a specially crafted repository that contains symbolic links as well as files using a clean/smudge filter such as Git LFS, may cause just-checked out script to be executed while cloning onto a case-insensitive file system such as NTFS, HFS+ or APFS (i.e. the default file systems on Windows and macOS). Note that clean/smudge filters have to be configured for that. Git for Windows configures Git LFS by default, and is therefore vulnerable. The problem has been patched in the versions published on Tuesday, March 9th, 2021. As a workaound, if symbolic link support is disabled in Git (e.g. via `git config --global core.symlinks false`), the described attack won't work. Likewise, if no clean/smudge filters such as Git LFS are configured globally (i.e. _before_ cloning), the attack is foiled. As always, it is best to avoid cloning repositories from untrusted sources. The earliest impacted version is 2.14.2. The fix versions are: 2.30.1, 2.29.3, 2.28.1, 2.27.1, 2.26.3, 2.25.5, 2.24.4, 2.23.4, 2.22.5, 2.21.4, 2.20.5, 2.19.6, 2.18.5, 2.17.62.17.6.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://support.apple.com/kb/HT212320 CONFIRM:https://github.com/git/git/security/advisories/GHSA-8prw-h3cq-mghm URL:https://github.com/git/git/security/advisories/GHSA-8prw-h3cq-mghm FEDORA:FEDORA-2021-03e61a6647 URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BBPNGLQSYJHLZZ37BO42YY6S5OTIF4L4/ FEDORA:FEDORA-2021-63fcbd126e URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LCLJJLKKMS5WRFO6C475AOUZTWQLIARX/ FEDORA:FEDORA-2021-ffd0b2108d URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LMXX2POK5X576BSDWSXGU7EIK6I72ERU/ FULLDISC:20210427 APPLE-SA-2021-04-26-10 Xcode 12.5 URL:http://seclists.org/fulldisclosure/2021/Apr/60 GENTOO:GLSA-202104-01 URL:https://security.gentoo.org/glsa/202104-01 MISC:http://packetstormsecurity.com/files/163978/Git-LFS-Clone-Command-Execution.html MISC:https://git-scm.com/docs/git-config#Documentation/git-config.txt-coresymlinks URL:https://git-scm.com/docs/git-config#Documentation/git-config.txt-coresymlinks MISC:https://git-scm.com/docs/gitattributes#_filter URL:https://git-scm.com/docs/gitattributes#_filter MISC:https://github.com/git/git/commit/684dd4c2b414bcf648505e74498a608f28de4592 URL:https://github.com/git/git/commit/684dd4c2b414bcf648505e74498a608f28de4592 MISC:https://lore.kernel.org/git/xmqqim6019yd.fsf@gitster.c.googlers.com/ URL:https://lore.kernel.org/git/xmqqim6019yd.fsf@gitster.c.googlers.com/ MLIST:[debian-lts-announce] 20221010 [SECURITY] [DLA 3145-1] git security update URL:https://lists.debian.org/debian-lts-announce/2022/10/msg00014.html MLIST:[oss-security] 20210309 git: malicious repositories can execute remote code while cloning URL:http://www.openwall.com/lists/oss-security/2021/03/09/3
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20201222	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20201222)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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