Buffer overflow in Squid-Cache Squid
CVE-2020-8517
An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.068 (93.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.068 · newest: 0.068 · change: 0.000
Affected products
- Squid-Cache Squid
- Canonical Ubuntu Linux — versions 16.04, 18.04, 19.10
- openSUSE Leap — versions 15.1
Weakness classification (CWE)
References
- www.squid-cache.org/Advisories/SQUID-2020_3.txt (Vendor Advisory)
- www.squid-cache.org/Versions/v4/changesets/squid-4-6982f1187a26557e582172965e26… (Patch, Vendor Advisory)
- usn.ubuntu.com/4289-1/ (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.html (vendor-advisory, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202003-34 (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.html (vendor-advisory, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20210304-0002/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-8517?
- CVE-2020-8517 is a high-severity vulnerability in Squid-Cache Squid, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2020-02-04.
- How severe is CVE-2020-8517?
- High severity. CVSS v3 base score is 7.5 out of 10.