CVE-2018-15501

HIGH
7.5
CVSS Score
Published: August 18, 2018 at 02:00 AM UTC
Updated: June 17, 2026 at 01:42 AM UTC
2 products affected across 2 vendorsDebian LinuxLIBGIT2

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Severity
HIGH7.5
Exploit prediction
EPSS 4%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.26.60.27.0 ≤ v < 0.27.4
Affected range stops below 0.26.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.27.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (8)

x_refsource_MISCExploitIssue TrackingPatchThird Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9406
x_refsource_MISCIssue TrackingPatchThird Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1104641
x_refsource_MISCRelease NotesThird Party Advisory
https://github.com/libgit2/libgit2/releases/tag/v0.26.6
x_refsource_MISCRelease NotesThird Party Advisory
https://github.com/libgit2/libgit2/releases/tag/v0.27.4
Mailing Listx_refsource_MLISTThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/08/msg00024.html
Mailing Listx_refsource_MLISTThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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