CVE-2018-20671 — load_specific_debug_section in objdump

load_specific_debug_section in objdump.c in GNU Binutils through 2.31.1 contains an integer overflow vulnerability that can trigger a heap-based buffer overflow via a crafted section size.

01What is this vulnerability?

load_specific_debug_section in objdump.c in GNU Binutils through 2.31.1 contains an integer overflow vulnerability that can trigger a heap-based buffer overflow via a crafted section size.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-01-04T16:00:00.000Z
• Last modified: 2024-08-05T12:05:17.788Z

09References

• sourceware.org — https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git%3Bh=11fa9f134fd658075c6…
• www.securityfocus.com — http://www.securityfocus.com/bid/106457
• sourceware.org — https://sourceware.org/bugzilla/show_bug.cgi?id=24005
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00072.html
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00008.html
• usn.ubuntu.com — https://usn.ubuntu.com/4336-1/