Denial of service in libgit2



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-15501
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
 libgit2
Universal components / Libraries / Libraries used by multiple products

Vendor libgit2.github.com

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU14546

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-15501

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 out-of-bounds read in ng_pkt in transports/smart_pkt.c in libgit2. A remote attacker can send a specially crafted smart-protocol "ng" packet that lacks a '' byte and cause the service to crash.

Mitigation

The vulnerability has been fixed in the versions 0.26.6, 0.27.4.

Vulnerable software versions

libgit2: 0.26.1.0 - 0.27.3

CPE2.3 External links

https://github.com/libgit2/libgit2/releases/tag/v0.26.6
https://github.com/libgit2/libgit2/releases/tag/v0.27.4


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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