Vulnerability CVE-2022-25235
Published: 2022-02-16

Description:
xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.

Type:

CWE-116

 (Improper Encoding or Escaping of Output)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Libexpat project -> Libexpat 

 References:
https://github.com/libexpat/libexpat/pull/562
http://www.openwall.com/lists/oss-security/2022/02/19/1
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