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HistoryApr 18, 2021 - 2:41 p.m.

[SECURITY] [DSA 4892-1] python-bleach security update

2021-04-1814:41:59
lists.debian.org
61

6.1 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

5.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

31.0%


Debian Security Advisory DSA-4892-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
April 18, 2021 https://www.debian.org/security/faq


Package : python-bleach
CVE ID : CVE-2021-23980
Debian Bug : 986251

It was reported that python-bleach, a whitelist-based HTML-sanitizing
library, is prone to a mutation XSS vulnerability in bleach.clean when
'svg' or 'math' are in the allowed tags, 'p' or 'br' are in allowed
tags, 'style', 'title', 'noscript', 'script', 'textarea', 'noframes',
'iframe', or 'xmp' are in allowed tags and 'strip_comments=False' is
set.

For the stable distribution (buster), this problem has been fixed in
version 3.1.2-0+deb10u2.

We recommend that you upgrade your python-bleach packages.

For the detailed security status of python-bleach please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/python-bleach

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]

6.1 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

5.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

31.0%