CVE DATABASE / CVE-2018-10887
CVE-2018-10887
CVSS 8.1 · HIGH
Summary
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 3.1 breakdown
| Base score | 8.1 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | REQUIRED |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | NONE |
| Availability | HIGH |
Weakness type (CWE)
Affected products
Libgit2 libgit2Debian debian linux
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References
- 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
- https://lists.debian.org/debian-lts-announce/2018/08/msg00024.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html
Data: NIST NVD. NVD last modified 2024-11-21. Always verify against the vendor advisory before acting.