// For flags

CVE-2022-23521

gitattributes parsing integer overflow in git

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

Git is distributed revision control system. gitattributes are a mechanism to allow defining attributes for paths. These attributes can be defined by adding a `.gitattributes` file to the repository, which contains a set of file patterns and the attributes that should be set for paths matching this pattern. When parsing gitattributes, multiple integer overflows can occur when there is a huge number of path patterns, a huge number of attributes for a single pattern, or when the declared attribute names are huge. These overflows can be triggered via a crafted `.gitattributes` file that may be part of the commit history. Git silently splits lines longer than 2KB when parsing gitattributes from a file, but not when parsing them from the index. Consequentially, the failure mode depends on whether the file exists in the working tree, the index or both. This integer overflow can result in arbitrary heap reads and writes, which may result in remote code execution. The problem has been patched in the versions published on 2023-01-17, going back to v2.30.7. Users are advised to upgrade. There are no known workarounds for this issue.

A flaw was found in Git, a distributed revision control system. When parsing gitattributes, a mechanism to allow defining attributes for paths, multiple integer overflows can occur when there is a huge number of path patterns, attributes for a single pattern, or declared attribute names. These overflows can be triggered via a crafted `.gitattributes` file that may be part of the commit history. Git silently splits lines longer than 2KB when parsing gitattributes from a file, but not when parsing them from the index. Consequentially, the failure mode depends on whether the file exists in the working tree, the index, or both. This integer overflow can result in arbitrary heap reads and writes, which may allow remote code execution.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2022-01-19 CVE Reserved
  • 2023-01-17 CVE Published
  • 2024-09-07 EPSS Updated
  • 2024-10-15 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-190: Integer Overflow or Wraparound
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Git-scm
Search vendor "Git-scm"
Git
Search vendor "Git-scm" for product "Git"
<= 2.30.6
Search vendor "Git-scm" for product "Git" and version " <= 2.30.6"
-
Affected
Git-scm
Search vendor "Git-scm"
Git
Search vendor "Git-scm" for product "Git"
>= 2.31.0 <= 2.31.5
Search vendor "Git-scm" for product "Git" and version " >= 2.31.0 <= 2.31.5"
-
Affected
Git-scm
Search vendor "Git-scm"
Git
Search vendor "Git-scm" for product "Git"
>= 2.32.0 <= 2.32.4
Search vendor "Git-scm" for product "Git" and version " >= 2.32.0 <= 2.32.4"
-
Affected
Git-scm
Search vendor "Git-scm"
Git
Search vendor "Git-scm" for product "Git"
>= 2.33.0 <= 2.33.5
Search vendor "Git-scm" for product "Git" and version " >= 2.33.0 <= 2.33.5"
-
Affected
Git-scm
Search vendor "Git-scm"
Git
Search vendor "Git-scm" for product "Git"
>= 2.34.0 <= 2.34.5
Search vendor "Git-scm" for product "Git" and version " >= 2.34.0 <= 2.34.5"
-
Affected
Git-scm
Search vendor "Git-scm"
Git
Search vendor "Git-scm" for product "Git"
>= 2.35.0 <= 2.35.5
Search vendor "Git-scm" for product "Git" and version " >= 2.35.0 <= 2.35.5"
-
Affected
Git-scm
Search vendor "Git-scm"
Git
Search vendor "Git-scm" for product "Git"
>= 2.36.0 <= 2.36.3
Search vendor "Git-scm" for product "Git" and version " >= 2.36.0 <= 2.36.3"
-
Affected
Git-scm
Search vendor "Git-scm"
Git
Search vendor "Git-scm" for product "Git"
>= 2.37.0 <= 2.37.4
Search vendor "Git-scm" for product "Git" and version " >= 2.37.0 <= 2.37.4"
-
Affected
Git-scm
Search vendor "Git-scm"
Git
Search vendor "Git-scm" for product "Git"
>= 2.38.0 <= 2.38.2
Search vendor "Git-scm" for product "Git" and version " >= 2.38.0 <= 2.38.2"
-
Affected
Git-scm
Search vendor "Git-scm"
Git
Search vendor "Git-scm" for product "Git"
2.39.0
Search vendor "Git-scm" for product "Git" and version "2.39.0"
-
Affected