Debian DLA-2467-2 : lxml regression update

medium Nessus Plugin ID 143308
New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it is different from CVSS.

VPR Score: 3


The remote Debian host is missing a security update.


The fix for CVE-2020-27783, released as DLA 2467-1, was incomplete as the <math/svg> component was still affected by the vulnerability. This update includes an additional patch that completes the fix. Note that a package with version 3.7.1-1+deb9u2 was uploaded, but before the publication of the advisory a regression was discovered, which was immediately corrected prior to publication of this advisory.

For Debian 9 stretch, this problem has been fixed in version 3.7.1-1+deb9u3.

We recommend that you upgrade your lxml packages.

For the detailed security status of lxml please refer to its security tracker page at:

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Upgrade the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 143308

File Name: debian_DLA-2467.nasl

Version: 1.3

Type: local

Agent: unix

Published: 11/30/2020

Updated: 12/21/2020

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 3

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:python-lxml, p-cpe:/a:debian:debian_linux:python-lxml-dbg, p-cpe:/a:debian:debian_linux:python-lxml-doc, p-cpe:/a:debian:debian_linux:python3-lxml, p-cpe:/a:debian:debian_linux:python3-lxml-dbg, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 12/18/2020

Vulnerability Publication Date: 12/3/2020

Reference Information

CVE: CVE-2020-27783