SB2018071409 - Integer overflow in libgit2-0.27 (Alpine package)
Published: July 14, 2018
Security Bulletin ID
SB2018071409
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Integer overflow (CVE-ID: CVE-2018-10887)
The vulnerability allows a local attacker to obtain potentially sensitive information or cause DoS condition on the target system.
The vulnerability exists due to integer overflow when unexpected sign extension in the git_delta_apply function of the delta.c file. A remote unauthenticated attacker can trigger an out-of-bounds read condition, bypass bounds check and read sensitive memory information or cause the service to crash.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=c8d39d0ddffc93f57a87b567422cbdbbd707e1f9
- https://git.alpinelinux.org/aports/commit/?id=5f77150ab6ff54d6897006bf52ae9685ed41d884
- https://git.alpinelinux.org/aports/commit/?id=97bfdb9ab9ae37dab1ee2cfc1c7fa1001fce2858
- https://git.alpinelinux.org/aports/commit/?id=b330e4c76dcf128b04ce82f0852cafd4e14a6300