CVE-2018-10887

A flaw was found in libgit2 before version 0.27.3. It has been discovered that an unexpected sign extension in git_delta_apply function in delta.c file may lead to an integer overflow which in turn leads to an out of bound read, allowing to read before the base object. An attacker may use this flaw to leak memory addresses or cause a Denial of Service.

CVSS v3 8.1 HIGH
CVSS v2.0 5.8 MEDIUM

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:N/A:P

Exploitability : 8.6 / Impact : 4.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1598021	Issue Tracking Patch
https://github.com/libgit2/libgit2/commit/3f461902dc1072acb8b7607ee65d0a0458ffac2a	Patch
https://github.com/libgit2/libgit2/commit/c1577110467b701dcbcf9439ac225ea851b47d22	Patch
https://github.com/libgit2/libgit2/releases/tag/v0.27.3	Patch Release Notes
https://lists.debian.org/debian-lts-announce/2018/08/msg00024.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:libgit2:libgit2:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:8.0:::::::*
	cpe:2.3:o:debian:debian_linux:9.0:::::::*

History

No history.

Information

Published : 2018-07-10 14:29

Updated : 2024-02-15 20:59

NVD link : CVE-2018-10887

Mitre link : CVE-2018-10887

CVE.ORG link : CVE-2018-10887

JSON object : View

Products Affected

debian

debian_linux

libgit2

libgit2

CWE

CWE-125

Out-of-bounds Read

CWE-190

Integer Overflow or Wraparound

CWE-681

Incorrect Conversion between Numeric Types

CWE-194

Unexpected Sign Extension

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