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HistoryOct 30, 2022 - 2:03 p.m.

[SECURITY] [DSA 5266-1] expat security update

2022-10-3014:03:23
lists.debian.org
24
debian
expat
cve-2022-43680
dtd
bullseye
security update
xml
library
vulnerability

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

8.2

Confidence

High

EPSS

0.004

Percentile

74.1%


Debian Security Advisory DSA-5266-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
October 30, 2022 https://www.debian.org/security/faq


Package : expat
CVE ID : CVE-2022-43680
Debian Bug : 1022743

A heap use-after-free vulnerability after overeager destruction of a
shared DTD in the XML_ExternalEntityParserCreate function in Expat, an
XML parsing C library, may result in denial of service or potentially
the execution of arbitrary code.

For the stable distribution (bullseye), this problem has been fixed in
version 2.2.10-2+deb11u5.

We recommend that you upgrade your expat packages.

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

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]

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

8.2

Confidence

High

EPSS

0.004

Percentile

74.1%