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CVE
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CVE-2018-10887Date: (C)2018-07-11   (M)2024-02-23


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 Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 8.1CVSS Score : 5.8
Exploit Score: 2.8Exploit Score: 8.6
Impact Score: 5.2Impact Score: 4.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: MEDIUM
Privileges Required: NONEAuthentication: NONE
User Interaction: REQUIREDConfidentiality: PARTIAL
Scope: UNCHANGEDIntegrity: NONE
Confidentiality: HIGHAvailability: PARTIAL
Integrity: NONE 
Availability: HIGH 
  
Reference:
https://lists.debian.org/debian-lts-announce/2018/08/msg00024.html
https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html
https://bugzilla.redhat.com/show_bug.cgi?id=1598021
https://github.com/libgit2/libgit2/commit/3f461902dc1072acb8b7607ee65d0a0458ffac2a
https://github.com/libgit2/libgit2/commit/c1577110467b701dcbcf9439ac225ea851b47d22
https://github.com/libgit2/libgit2/releases/tag/v0.27.3

CWE    1
CWE-125
OVAL    8
oval:org.secpod.oval:def:114817
oval:org.secpod.oval:def:2000286
oval:org.secpod.oval:def:115229
oval:org.secpod.oval:def:115426
...

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