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HistoryMay 30, 2021 - 8:06 a.m.

[SECURITY] [DLA 2669-1] libxml2 security update

2021-05-3008:06:16
lists.debian.org
120

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

33.9%


Debian LTS Advisory DLA-2669-1 [email protected]
https://www.debian.org/lts/security/ Thorsten Alteholz
May 30, 2021 https://wiki.debian.org/LTS


Package : libxml2
Version : 2.9.4+dfsg1-2.2+deb9u5
CVE ID : CVE-2021-3541

An issue has been found in libxml2, the GNOME XML library.
This issue is called "Parameter Laughs"-attack and is related to parameter
entities expansion.
It is similar to the "Billion Laughs"-attacks found earlier in libexpat.
More information can be found at [1]

[1] https://blog.hartwork.org/posts/cve-2021-3541-parameter-laughs-fixed-in-libxml2-2-9-11/

For Debian 9 stretch, this problem has been fixed in version
2.9.4+dfsg1-2.2+deb9u5.

We recommend that you upgrade your libxml2 packages.

For the detailed security status of libxml2 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libxml2

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

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

33.9%