Release Note
OTRS Security Advisory 2021-16
Please read carefully and check if the version of your OTRS system is affected by this vulnerability.
Please send information regarding vulnerabilities in OTRS to: security@otrs.org
PGP Key
- pub 2048R/9C227C6B 2011-03-21
- uid OTRS Security Team <security@otrs.org>
- GPG Fingerprint E330 4608 DA6E 34B7 1551 C244 7F9E 44E9 9C22 7C6B
Security Advisory Details
- ID: OSA-2021-16
- Date: 2021-09-06
- Title: DoS attack using PostMaster filters
- Severity: 5.3 MEDIUM
- Product: OTRS 8.0.x, OTRS 7.0.x
- Fixed in: OTRS 8.0.16, OTRS 7.0.29
- FULL CVSS v3.1 VECTOR: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- References: CVE-2021-36093
OSA-2021-16 DoS attack using PostMaster filters (CVE-2021-TBD)
PRODUCT AFFECTED:
This issue affects ((OTRS)) Community Edition 6.0.x.
This issue affects OTRS 7.0.x, 8.0.x.
PROBLEM:
It’s possible to create an email which can be stuck while being processed by PostMaster filters, causing DoS.
This issue affects:
OTRS AG ((OTRS)) Community Edition 6.0.x version 6.0.1 and later versions.
OTRS AG OTRS 7.0.x version 7.0.28 and prior versions; 8.0.x version 8.0.15 and prior versions.
This issue was seen during production usage.
This issue has been assigned CVE-2021-36093.
SOLUTION:
Update to OTRS 8.0.16, OTRS 7.0.29.
This issue is being tracked as 2021070842000819.
MODIFICATION HISTORY:
- 2021-09-06: Initial Publication.
RELATED LINKS:
CVSS SCORE:
5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
RISK LEVEL:
MEDIUM
ACKNOWLEDGEMENTS:
- Alberto Molina