CVE-2015-8748 Radicale regex metacharacters injection in the user name

What is CVE-2015-8748?

CVE-2015-8748 is a medium-severity authentication bypass vulnerability in n/a, published on 3 Feb 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Radicale before 1.1 allows remote authenticated users to bypass owner_write and owner_only limitations via regex metacharacters in the user name, as demonstrated by ".*".

Weakness: CWE-264

Which versions are affected by CVE-2015-8748?

3 open source packages ship an affected version, including radicale and Radicale. It affects 1 product.

Products include Radicale Radicale.

How do I fix CVE-2015-8748?

Upgrade radicale to 1.1 or later.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2015-8748 being exploited?

There is no known exploitation of CVE-2015-8748 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2015-8747 Radicale vulnerable to arbitrary file read or write Critical 10.0
• CVE-2016-1505 Radicale is vulnerable to directory traversal on Windows Filesystem Storage Backend component Critical 10.0
• CVE-2017-8342 Radicale is vulnerable to timing oracles and simple bruteforce attacks High 8.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2015-8748, GHSA-6w8c-6jrg-qwj2, MGASA-2016-0057, PYSEC-2016-37.