Race condition in radicale

1) Race condition

EUVDB-ID: #VU39097

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-8342

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

Radicale before 1.1.2 and 2.x before 2.0.0rc2 is prone to timing oracles and simple brute-force attacks when using the htpasswd authentication method.

Mitigation

Install update from vendor's website.

Vulnerable software versions

radicale: 2.0.0

External links

http://bugs.debian.org/861514
http://github.com/Kozea/Radicale/blob/1.1.2/NEWS.rst
http://github.com/Kozea/Radicale/commit/059ba8dec1f22ccbeab837e288b3833a099cee2d
http://github.com/Kozea/Radicale/commit/190b1dd795f0c552a4992445a231da760211183b
http://lists.debian.org/debian-lts-announce/2020/04/msg00019.html

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.