Fedora 36 update for git



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2023-22490
CVE-2023-23946
CWE-ID CWE-59
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Operating systems & Components / Operating system

git
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Link following

EUVDB-ID: #VU72246

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-22490

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insecure processing of symbolic links when using local clone optimization. Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, however the `objects` directory itself may still be a symbolic link. A remote attacker can trick the victim into using the local clone optimization to exfiltrate arbitrary files from the victim's system.

Mitigation

Upgrade git to version 2.39.2-1.fc36.

Vulnerable software versions

Fedora: 36

git: before 2.39.2-1.fc36

CPE2.3 External links

http://bodhi.fedoraproject.org/updates/FEDORA-2023-2b3acb6cfd


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Link following

EUVDB-ID: #VU72245

Risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-23946

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Exploit availability: No

Description

The vulnerability allows an attacker to compromise the affected system.

The vulnerability exists due to application allows to overwrite files outside the working tree via the "git apply" command. A remote attacker can trick the victim to run the affected command against a malicious or compromised repository and overwrite arbitrary files on the system.

Mitigation

Upgrade git to version 2.39.2-1.fc36.

Vulnerable software versions

Fedora: 36

git: before 2.39.2-1.fc36

CPE2.3 External links

http://bodhi.fedoraproject.org/updates/FEDORA-2023-2b3acb6cfd


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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