Use After Free in GNU Binutils
CVE-2018-20623
In GNU Binutils 2.31.1, there is a use-after-free in the error function in elfcomm.c when called from the process_archive function in readelf.c via a crafted ELF file.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.018 (77.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- GNU Binutils — versions 2.31.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/106370 (VDB Entry, Third Party Advisory, vdb-entry)
- sourceware.org/bugzilla/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- support.f5.com/csp/article/K38336243 (Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-10/msg00072.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-11/msg00008.html (vendor-advisory)
- usn.ubuntu.com/4336-1/ (vendor-advisory)
Frequently asked questions
- What is CVE-2018-20623?
- CVE-2018-20623 is a medium-severity vulnerability in GNU Binutils, classified under Use After Free. CVSS score: 5.5/10. Published 2018-12-31.
- How severe is CVE-2018-20623?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2018-20623 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.