Debian update for libxml-security-java

1) Information disclosure

EUVDB-ID: #VU58198

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-40690

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to an issue where the "secureValidation" property is not passed correctly when creating a KeyInfo from a KeyInfoReference element. A remote attacker can abuse an XPath Transform to extract any local .xml files in a RetrievalMethod element.

Mitigation

Update libxml-security-java package to one of the following versions: 2.0.10-2+deb10u1, 2.0.10-2+deb11u1.

Vulnerable software versions

libxml-security-java (Debian package): 2.0.10 - 2.0.10-2

External links

http://www.debian.org/security/2021/dsa-5010

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.