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ubuntucveUbuntu.comUB:CVE-2021-20294
HistoryApr 29, 2021 - 12:00 a.m.

CVE-2021-20294

2021-04-2900:00:00
ubuntu.com
ubuntu.com
22
flaw
binutils
readelf
stack buffer overflow
out-of-bounds write
arbitrary data
confidentiality
integrity
availability

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.003

Percentile

69.7%

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.

Bugs

Notes

Author Note
mdeslaur introduced in: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=0942c7ab94e554657c3e11ab85ae7f15373ee80d

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.003

Percentile

69.7%