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Test ID:1.3.6.1.4.1.25623.1.0.704892
Category:Debian Local Security Checks
Title:Debian: Security Advisory (DSA-4892-1)
Summary:The remote host is missing an update for the Debian 'python-bleach' package(s) announced via the DSA-4892-1 advisory.
Description:Summary:
The remote host is missing an update for the Debian 'python-bleach' package(s) announced via the DSA-4892-1 advisory.

Vulnerability Insight:
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: [link moved to references]

Affected Software/OS:
'python-bleach' package(s) on Debian 10.

Solution:
Please install the updated package(s).

CVSS Score:
6.4

CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2021-23980
https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-23980
https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq
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