Out-of-bounds read in libgit2-0.27 (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-10888
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
 libgit2-0.27 (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU13843

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-10888

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to a missing check in the git_delta_apply function, as defined in the delta.c file. A remote unauthenticated attacker can trick the victim into opening a specially crafted binary delta file, trigger an out-of-bounds read condition and cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libgit2-0.27 (Alpine package): 0.27.8-r0

CPE2.3 External links

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


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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