Buffer overflow in GNU Binutils
CVE-2018-18309
An issue was discovered in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31. An invalid memory address dereference was discovered in read_reloc in reloc.c. The vulnerability causes a segmentation fault and application crash, which leads to denial of service, as demonstrated by objdump, because of missing _bfd_clear_contents bounds checking.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.018 (77.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.9% 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
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sourceware.org/bugzilla/show_bug.cgi (Exploit, Patch, Third Party Advisory, Issue Tracking)
- www.securityfocus.com/bid/105692 (VDB Entry, Third Party Advisory, vdb-entry)
- sourceware.org/git/gitweb.cgi
- 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-2018-18309?
- CVE-2018-18309 is a medium-severity vulnerability in GNU Binutils, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2018-10-15.
- How severe is CVE-2018-18309?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2018-18309 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.