OTRS Security Advisory 2021-16

Release Note

OTRS Security Advisory 2021-16

September 6, 2021 — 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.

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

 

 

Release Details

  • Release name:
    OTRS Security Advisory 2021-16
  • Release date:
    6. September 2021
  • Release type:
    security advisories