Buffer overflow in GNU Libiberty
CVE-2016-4491
The d_print_comp function in cp-demangle.c in libiberty allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted binary, which triggers infinite recursion and a buffer overflow, related to a node having "itself as ancestor more than once."
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 (77.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.4% 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
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gcc.gnu.org/bugzilla/show_bug.cgi (Issue Tracking)
- www.openwall.com/lists/oss-security/2016/05/05/5 (mailing-list, Patch, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/90016 (vdb-entry)
- gcc.gnu.org/ml/gcc-patches/2016-05/msg00105.html (Vendor Advisory, mailing-list, Patch)
Frequently asked questions
- What is CVE-2016-4491?
- CVE-2016-4491 is a medium-severity vulnerability in GNU Libiberty, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2017-02-24.
- How severe is CVE-2016-4491?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2016-4491 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.