Denial of service in GNU Binutils



| Updated: 2022-03-23
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-3487
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Binutils
Universal components / Libraries / Libraries used by multiple products

Vendor GNU

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU61550

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-3487

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the BFD library in binutils. A remote attacker who supplies a crafted file to an application linked with BFD can use the DWARF functionality to perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Binutils: 2.7 - 2.35.2

CPE2.3 External links

https://bugzilla.redhat.com/show_bug.cgi?id=1947111
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Q6V2LF5AVOUTHPYY2O5TRNAIXVMXFDGL/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RNBNDMJWZOQYCEZXENHBSM6DBZ332UZZ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3Z3KSJY3CLAAFFT7FNFCJOMDITPQGN56/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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