CVE-2021-39215
In versions prior to 2.0.5963, a Prosody module allows the use of symmetrical algorithms to validate JSON web tokens.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Jitsi Meet is an open source video conferencing application. In versions prior to 2.0.5963, a Prosody module allows the use of symmetrical algorithms to validate JSON web tokens. This means that tokens generated by arbitrary sources can be used to gain authorization to protected rooms. This issue is fixed in Jitsi Meet 2.0.5963. There are no known workarounds aside from updating.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.23% probability · 67th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- 8x8/jitsi meet
- Source
- security-advisories@github.com
References
- https://github.com/jitsi/jitsi-meet/pull/9319Patch, Third Party Advisory
- https://github.com/jitsi/jitsi-meet/security/advisories/GHSA-45ff-37jm-xjfxThird Party Advisory
- https://github.com/jitsi/jitsi-meet/pull/9319Patch, Third Party Advisory
- https://github.com/jitsi/jitsi-meet/security/advisories/GHSA-45ff-37jm-xjfxThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.