CVE-2018-17156: freebsd Out-of-bounds Write
CVSS: 5.9v3.0MediumModified
Published 28-11-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-17156 is a medium (CVSS 5.9) Out-of-bounds Write vulnerability in freebsd. EPSS estimates a 1.63% chance of exploitation in the next 30 days, higher than 75.8% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.9/10
010
Medium · v3.0 (NVD)EPSS score
1.63%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 28-11-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
In FreeBSD before 11.2-STABLE(r340268) and 11.2-RELEASE-p5, due to incorrectly accounting for padding on 64-bit platforms, a buffer underwrite could occur when constructing an ICMP reply packet when using a non-standard value for the net.inet.icmp.quotelen sysctl.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 5.9Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesSingle source
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.63%
Chance of exploitation in the next 30 days
Percentile
76%
Versus all other CVEs
30-day change
0.00 pp
From 1.63% on 19-09-2026
19-09-202619-10-2026
EPSS score1.63%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (security.freebsd.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Freebsd1 product
- freebsdEOLFreeBSD 11.2 before 11.2-RELEASE-p5 | < 11.2 | 11.2:p5
1 vendor · 1 product
References
2 links- security.freebsd.org/advisories/FreeBSD-EN-18:13.icmp.ascX Refsource CONFIRMExploitMitigationVendor Advisory