FreeRADIUS up to 3.0.18 Dragonblood data authenticity

Summaryinfo

A vulnerability described as critical has been identified in FreeRADIUS up to 3.0.18. This affects an unknown function. Such manipulation leads to data authenticity (Dragonblood). This vulnerability is uniquely identified as CVE-2019-11235. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in FreeRADIUS up to 3.0.18 (Network Authentication Software). Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a data authenticity vulnerability (Dragonblood). Using CWE to declare the problem leads to CWE-345. The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data. Impacted is confidentiality, integrity, and availability. CVE summarizes:

FreeRADIUS before 3.0.19 mishandles the "each participant verifies that the received scalar is within a range, and that the received group element is a valid point on the curve being used" protection mechanism, aka a "Dragonblood" issue, a similar issue to CVE-2019-9498 and CVE-2019-9499.

The bug was discovered 04/15/2019. The weakness was disclosed 04/22/2019 as Bug 1695748 as confirmed bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2019-11235 since 04/15/2019. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197437 (Ubuntu Security Notification for Freeradius Vulnerabilities (USN-3954-1)).

Upgrading to version 3.0.19 eliminates this vulnerability.

The entry VDB-133921 is pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Network Authentication Software

Name

• FreeRADIUS

Version

• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.0.9
• 3.0.10
• 3.0.11
• 3.0.12
• 3.0.13
• 3.0.14
• 3.0.15
• 3.0.16
• 3.0.17
• 3.0.18

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

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Exploitinginfo

Threat Intelligenceinfo

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Timelineinfo

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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