Vulnerability in Squid-Cache Squid
CVE-2018-1000024
The Squid Software Foundation Squid HTTP Caching Proxy version 3.0 to 3.5.27, 4.0 to 4.0.22 contains a Incorrect Pointer Handling vulnerability in ESI Response Processing that can result in Denial of Service for all clients using the proxy.. This attack appear to be exploitable via Remote server delivers an HTTP response payload containing valid but unusual ESI syntax.. This vulnerability appears to have been fixed in 4.0.23 and later.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.079 (94.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.079 · newest: 0.079 · change: 0.000
Affected products
- Squid-Cache Squid
- Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10
- Debian Linux — versions 7.0, 8.0, 9.0
Public proof-of-concept exploits
References
- usn.ubuntu.com/3557-1/ (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2018/dsa-4122 (vendor-advisory, Third Party Advisory)
- www.squid-cache.org/Versions/ (Release Notes, Vendor Advisory)
- lists.debian.org/debian-lts-announce/2018/02/msg00001.html (mailing-list, Mailing List, Third Party Advisory)
- www.squid-cache.org/Advisories/SQUID-2018_1.txt (Patch, Vendor Advisory)
- usn.ubuntu.com/4059-2/ (vendor-advisory)
Frequently asked questions
- What is CVE-2018-1000024?
- CVE-2018-1000024 is a high-severity vulnerability in Squid-Cache Squid. CVSS score: 7.5/10. Published 2018-02-09.
- How severe is CVE-2018-1000024?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-1000024 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.