Buffer overflow in GNU Binutils
CVE-2021-20284
A flaw was found in GNU Binutils 2.35.1, where there is a heap-based buffer overflow in _bfd_elf_slurp_secondary_reloc_section in elf.c due to the number of symbols not calculated correctly. The highest threat from this vulnerability is to system availability.
Vulnerability class: Buffer Overflow
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: 0.013 (69.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- GNU Binutils — versions 2.35.1
- NetApp Cloud Backup
- NetApp Ontap Select Deploy Administration Utility
- Binutils — versions Binutils 2.35.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sourceware.org/bugzilla/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- bugzilla.redhat.com/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- security.netapp.com/advisory/ntap-20210521-0010/ (Third Party Advisory)
- security.gentoo.org/glsa/202208-30 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-20284?
- CVE-2021-20284 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 2021-03-26.
- How severe is CVE-2021-20284?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2021-20284 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.