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ubuntuUbuntuUSN-5638-3
HistoryNov 23, 2022 - 12:00 a.m.

Expat vulnerability

2022-11-2300:00:00
ubuntu.com
24

7.5 High

CVSS3

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

8.4 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.005 Low

EPSS

Percentile

76.5%

JSON

Releases

  • Ubuntu 22.10
  • Ubuntu 22.04 LTS
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 ESM
  • Ubuntu 16.04 ESM

Packages

  • expat - XML parsing C library

Details

USN-5638-1 fixed a vulnerability in Expat. This update provides
the corresponding updates for Ubuntu 16.04 ESM, Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-43680)
This update also fixes a minor regression introduced in
Ubuntu 18.04 LTS.

We apologize for the inconvenience.

Original advisory details:

Rhodri James discovered that Expat incorrectly handled memory when
processing certain malformed XML files. An attacker could possibly
use this issue to cause a crash or execute arbitrary code.

OSVersionArchitecturePackageVersionFilename
Ubuntu22.10noarchexpat< 2.4.8-2ubuntu0.22.10.1UNKNOWN
Ubuntu22.10noarchexpat-dbgsym< 2.4.8-2ubuntu0.22.10.1UNKNOWN
Ubuntu22.10noarchlibexpat1< 2.4.8-2ubuntu0.22.10.1UNKNOWN
Ubuntu22.10noarchlibexpat1-dbgsym< 2.4.8-2ubuntu0.22.10.1UNKNOWN
Ubuntu22.10noarchlibexpat1-dev< 2.4.8-2ubuntu0.22.10.1UNKNOWN
Ubuntu22.04noarchexpat< 2.4.7-1ubuntu0.2UNKNOWN
Ubuntu22.04noarchexpat-dbgsym< 2.4.7-1ubuntu0.2UNKNOWN
Ubuntu22.04noarchlibexpat1< 2.4.7-1ubuntu0.2UNKNOWN
Ubuntu22.04noarchlibexpat1-dbgsym< 2.4.7-1ubuntu0.2UNKNOWN
Ubuntu22.04noarchlibexpat1-dev< 2.4.7-1ubuntu0.2UNKNOWN
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7.5 High

CVSS3

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

8.4 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.005 Low

EPSS

Percentile

76.5%

JSON
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