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
EPSS: 0.013 (67.2th percentile) — read the EPSS interpretation.
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.
Affected products
- Gnu Binutils — versions 2.35.1
- Netapp Cloud_backup
- Netapp Ontap_select_deploy_administration_utility
- N/a Binutils — versions Binutils 2.35.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
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.