Buffer overflow in GNU Binutils
CVE-2021-20294
A flaw was found in binutils readelf 2.35 program. An attacker who is able to convince a victim using readelf to read a crafted file could trigger a stack buffer overflow, out-of-bounds write of arbitrary data supplied by the attacker. The highest impact of this flaw is to confidentiality, integrity, and availability.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.033 (88.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000
Affected products
- GNU Binutils
- Binutils — versions binutils 2.35.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- sourceware.org/bugzilla/show_bug.cgi (Exploit, Patch, Third Party Advisory, Issue Tracking)
- lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a4508… (mailing-list)
- lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698… (mailing-list)
- security.gentoo.org/glsa/202208-30 (vendor-advisory, Third Party Advisory)
- sourceware.org/git/
Frequently asked questions
- What is CVE-2021-20294?
- CVE-2021-20294 is a high-severity vulnerability in GNU Binutils, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2021-04-29.
- How severe is CVE-2021-20294?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-20294 known to be exploited?
- 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.