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CVE-2020-35493

Date: January 4, 2021

A flaw exists in binutils in bfd/pef.c. An attacker who is able to submit a crafted PEF file to be parsed by objdump could cause a heap buffer overflow -> out-of-bounds read that could lead to an impact to application availability. This flaw affects binutils versions prior to 2.34.

Language: C

Severity Score

Related Resources (15)

https://security-tracker.debian.org/tracker/CVE-2020-27661
https://git.qemu.org/?p=qemu.git;a=commit;h=bea2a9e3e00b275dc40cfa09c760c715b8753e03
https://github.com/bminor/binutils-gdb/commit/f2a3559d54602cecfec6d90f792be4a70ad918ab
https://access.redhat.com/security/cve/CVE-2020-35493
https://nvd.nist.gov/vuln/detail/CVE-2020-35493
https://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg04263.html
https://github.com/qemu/qemu/commit/bea2a9e3e00b275dc40cfa09c760c715b8753e03
https://security.gentoo.org/glsa/202107-24
https://bugzilla.redhat.com/show_bug.cgi?id=1911437
https://security-tracker.debian.org/tracker/CVE-2020-35493
https://bugzilla.redhat.com/show_bug.cgi?id=1890653
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4KOK3QWSVOUJWJ54HVGIFWNLWQ5ZY4S6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4KOK3QWSVOUJWJ54HVGIFWNLWQ5ZY4S6/
https://security.netapp.com/advisory/ntap-20210212-0007/
https://www.mend.io/vulnerability-database/CVE-2020-35493

Severity Score

Weakness Type (CWE)

Improper Input Validation

CWE-20

Out-of-bounds Read

CWE-125

Heap-based Buffer Overflow

CWE-122

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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