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ubuntucveUbuntu.comUB:CVE-2021-21235
HistoryJan 06, 2021 - 12:00 a.m.

CVE-2021-21235

2021-01-0600:00:00
ubuntu.com
ubuntu.com
16
kamadak-exif png parsing loop cve-2021-21235 fix crafted png files reader::read_from_container uninfinite loop workaround unix applications.signature

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.002

Percentile

56.5%

kamadak-exif is an exif parsing library written in pure Rust. In
kamadak-exif version 0.5.2, there is an infinite loop in parsing crafted
PNG files. Specifically, reader::read_from_container can cause an infinite
loop when a crafted PNG file is given. This is fixed in version 0.5.3. No
workaround is available. Applications that do not pass files with the PNG
signature to Reader::read_from_container are not affected.

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.002

Percentile

56.5%