CVE-2018-15501: debian debian_linux Out-of-bounds Read
CVSS: 7.5v3.1HighModified
AliasesALPINE-CVE-2018-15501UBUNTU-CVE-2018-15501DEBIAN-CVE-2018-15501
Published 18-08-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-15501 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in debian debian_linux. EPSS estimates a 4.37% chance of exploitation in the next 30 days, higher than 91.1% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
4.37%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 4 · Related 3Timeline
- 18-08-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
5 scores · 4 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
4.37%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
0.00 pp
From 4.37% on 19-09-2026
19-09-202619-10-2026
EPSS score4.37%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugs.chromium.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- libgit2< 0.27.4+dfsg.1-0.1
- debian_linuxEOL8.0 | 9.0
Alpine1 product
- libgit2≥ 0.27.0, < 0.27.4-r0
Libgit21 product
- libgit2< 0.26.6 | ≥ 0.27.0, < 0.27.4
Ubuntu1 product
- libgit2< 0.19.0-2ubuntu0.4+esm2 | < 0.24.1-2ubuntu0.2+esm3 | < 0.26.0+dfsg.1-1.1ubuntu0.2+esm2
4 vendors · 5 products
References
13 links- bugs.chromium.org/p/oss-fuzz/issues/detail?id=9406X Refsource MISCExploitIssue TrackingPatchThird Party AdvisoryREPORT
- github.com/libgit2/libgit2/releases/tag/v0.27.4X Refsource MISCRelease NotesThird Party AdvisoryREPORT
- www.pro-linux.de/sicherheit/2/44650/denial-of-service-in-libgit2.htmlX Refsource MISCThird Party AdvisoryREPORT
- bugzilla.suse.com/show_bug.cgi?id=1104641X Refsource MISCIssue TrackingPatchThird Party AdvisoryREPORT
lists.debian.org/debian-lts-announce/2018/08/msg00024.htmlMailing ListX Refsource MLISTThird Party Advisory- github.com/libgit2/libgit2/releases/tag/v0.26.6X Refsource MISCRelease NotesThird Party AdvisoryREPORT
- github.com/libgit2/libgit2/commit/1f9a8510e1d2f20ed7334eeeddb92c4dd8e7c649X Refsource MISCPatchThird Party AdvisoryREPORT
- lists.debian.org/debian-lts-announce/2022/03/msg00031.htmlMailing ListX Refsource MLISTThird Party Advisory