Vulnerability CVE-2018-15501
Published: 2018-08-17   Modified: 2018-08-18

Description:
In ng_pkt in transports/smart_pkt.c in libgit2 before 0.26.6 and 0.27.x before 0.27.4, a remote attacker can send a crafted smart-protocol "ng" packet that lacks a '\0' byte to trigger an out-of-bounds read that leads to DoS.

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Debian -> Debian linux 

 References:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9406
https://bugzilla.suse.com/show_bug.cgi?id=1104641
https://github.com/libgit2/libgit2/commit/1f9a8510e1d2f20ed7334eeeddb92c4dd8e7c649
https://github.com/libgit2/libgit2/releases/tag/v0.26.6
https://github.com/libgit2/libgit2/releases/tag/v0.27.4
https://lists.debian.org/debian-lts-announce/2018/08/msg00024.html
https://www.pro-linux.de/sicherheit/2/44650/denial-of-service-in-libgit2.html
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