p PatchFirst

CVE-2021-21439

CVE-2021-21439 · Possible DoS attack using a special crafted URL in email body

This page contains facts from public vulnerability sources. Check the original advisory before updating.

DoS attack can be performed when an email contains specially designed URL in the body. It can lead to the high CPU usage and cause low quality of service, or in extreme case bring the system to a halt. 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 7.0.26 and prior versions; 8.0.x version 8.0.13 and prior versions.

CVSS 6.5 · Medium · EPSS 0.9% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • ((otrs)) community edition

    Versions
    • ≥ 6.0.1, < 6.0.x*: Affected (custom)

    No fix published

  • otrs

    Versions
    • ≥ 7.0.x, ≤ 7.0.26: Affected (custom)
    • ≥ 8.0.x, ≤ 8.0.13: Affected (custom)

    No fix published

  • otrs2 Debian:11

    Versions
    • 2.0.4p01-10
    • 2.0.4p01-11
    • 2.0.4p01-12
    • 2.0.4p01-13
    • 2.0.4p01-14
    • 2.0.4p01-14.1
    • 2.0.4p01-15
    • 2.0.4p01-16
    • 2.0.4p01-17
    • 2.0.4p01-18
    • 2.0.4p01-6
    • 2.0.4p01-7
    • 2.0.4p01-8
    • 2.0.4p01-9
    • 2.0.99beta1-1
    • 2.0.99beta1-2
    • 2.1.1-1
    • 2.1.3-1
    • 2.1.4-1
    • 2.1.4-2
    • 2.1.5-1
    • 2.1.5-2
    • 2.1.5-3
    • 2.1.6-1
    • 2.1.7-1
    • 2.1.7-2
    • 2.2.0~beta2-1
    • 2.2.0~beta3-1
    • 2.2.1-1
    • 2.2.2-1
    • 2.2.3-1
    • 2.2.4-1
    • 2.2.5-1
    • 2.2.5-2
    • 2.2.6-1
    • 2.2.7-1
    • 2.2.7-2
    • 2.2.7-2lenny1
    • 2.2.7-2lenny2
    • 2.2.7-2lenny3
    • 2.2.7-3
    • 2.3.2-1
    • 2.3.2-2
    • 2.3.3-1
    • 2.3.4-1
    • 2.3.4-2
    • 2.3.4-3
    • 2.3.4-4
    • 2.3.4-5
    • 2.3.4-6
    • 2.3.4-7
    • 2.4.10+dfsg1-1
    • 2.4.10+dfsg1-2
    • 2.4.10+dfsg1-3
    • 2.4.5-1
    • 2.4.5-2
    • 2.4.5-3
    • 2.4.5-4
    • 2.4.5-5
    • 2.4.6-1
    • 2.4.6-2
    • 2.4.7+dfsg1-1
    • 2.4.7-1
    • 2.4.7-2
    • 2.4.7-3
    • 2.4.7-4
    • 2.4.7-5
    • 2.4.7-6
    • 2.4.8+dfsg1-1
    • 2.4.9+dfsg1-1
    • 2.4.9+dfsg1-2
    • 2.4.9+dfsg1-3
    • 2.4.9+dfsg1-3+squeeze1
    • 2.4.9+dfsg1-3+squeeze3
    • 2.4.9+dfsg1-3+squeeze4
    • 2.4.9+dfsg1-3+squeeze5
    • 2.4.9+dfsg1-4
    • 2.4.9+dfsg1-5
    • 3.0.10+dfsg1-1
    • 3.0.10+dfsg1-2
    • 3.0.11+dfsg1-1
    • 3.0.8+dfsg1-1
    • 3.0.9+dfsg1-1
    • 3.1.0~beta4+dfsg1-1
    • 3.1.0~beta5+dfsg1-1
    • 3.1.0~rc1+dfsg1-1
    • 3.1.1+dfsg1-1
    • 3.1.1+dfsg1-2
    • 3.1.10+dfsg1-1
    • 3.1.11+dfsg1-1
    • 3.1.12+dfsg1-1
    • 3.1.12+dfsg1-2
    • 3.1.12+dfsg1-3
    • 3.1.2+dfsg1-1
    • 3.1.2+dfsg1-2
    • 3.1.2+dfsg1-3
    • 3.1.3+dfsg1-1
    • 3.1.3+dfsg1-2
    • 3.1.4+dfsg1-1
    • 3.1.5+dfsg1-1
    • 3.1.5+dfsg1-2
    • 3.1.5+dfsg1-3
    • 3.1.6+dfsg1-1
    • 3.1.7+dfsg1-1
    • 3.1.7+dfsg1-2
    • 3.1.7+dfsg1-3
    • 3.1.7+dfsg1-4
    • 3.1.7+dfsg1-5
    • 3.1.7+dfsg1-6
    • 3.1.7+dfsg1-7
    • 3.1.7+dfsg1-8
    • 3.1.8+dfsg1-1
    • 3.1.9+dfsg1-1
    • 3.2.1+dfsg1-1
    • 3.2.10-1
    • 3.2.10-2
    • 3.2.11-1
    • 3.2.11-1~bpo70+1
    • 3.2.12-1
    • 3.2.2+dfsg1-1
    • 3.2.3+dfsg1-1
    • 3.2.4-1
    • 3.2.5-1
    • 3.2.6-1
    • 3.2.6-2
    • 3.2.7-1
    • 3.2.7-2
    • 3.2.8-1
    • 3.2.9-1
    • 3.2.9-2
    • 3.3.1-1
    • 3.3.10-1
    • 3.3.11-1
    • 3.3.18-1~deb7u1
    • 3.3.18-1~deb7u2
    • 3.3.18-1~deb7u3
    • 3.3.2-1
    • 3.3.3-1
    • 3.3.3-2
    • 3.3.3-3
    • 3.3.4-1
    • 3.3.5-1
    • 3.3.6-1
    • 3.3.7-1
    • 3.3.7-2
    • 3.3.8-1
    • 3.3.9-1
    • 3.3.9-2
    • 3.3.9-3
    • 3.3.9-3~bpo70+1
    • 4.0.10-1
    • 4.0.11-1
    • 4.0.12-1
    • 4.0.13-1
    • 4.0.13-1~bpo8+1
    • 4.0.5-1
    • 4.0.5-2
    • 4.0.6-1
    • 4.0.7-1
    • 4.0.7-2
    • 4.0.8-1
    • 4.0.9-1
    • 5.0.1-1
    • 5.0.1-2
    • 5.0.10-1
    • 5.0.10-1~bpo8+1
    • 5.0.11-1
    • 5.0.12-1
    • 5.0.13-1
    • 5.0.13-1~bpo8+1
    • 5.0.13-2
    • 5.0.14-1
    • 5.0.14-1~bpo8+1
    • 5.0.15-1
    • 5.0.16-1
    • 5.0.16-1~bpo8+1
    • 5.0.17-1
    • 5.0.18-1
    • 5.0.19-1
    • 5.0.2-1
    • 5.0.20-1
    • 5.0.21-1
    • 5.0.21-1~bpo9+1
    • 5.0.22-1
    • 5.0.23-1
    • 5.0.23-1~bpo9+1
    • 5.0.24-1
    • 5.0.24-1~bpo9+1
    • 5.0.3-1
    • 5.0.5-1
    • 5.0.6-1
    • 5.0.6-1~bpo8+1
    • 5.0.7-1
    • 5.0.8+dfsg1-1
    • 5.0.8-1
    • 5.0.8-1~bpo8+1
    • 5.0.9+dfsg1-1
    • 5.0.9+repack1-1
    • 6.0.1-1
    • 6.0.10-1
    • 6.0.11-1
    • 6.0.11-1~bpo9+1
    • 6.0.12-1
    • 6.0.12-1~bpo9+1
    • 6.0.13-1
    • 6.0.14-1
    • 6.0.15-1
    • 6.0.16-1
    • 6.0.16-2
    • 6.0.17-1
    • 6.0.18-1
    • 6.0.19-1
    • 6.0.2-1
    • 6.0.20-1
    • 6.0.20-1~bpo10+1
    • 6.0.21-1
    • 6.0.22-1
    • 6.0.23-1
    • 6.0.23-2
    • 6.0.24-1
    • 6.0.24-1~bpo10+1
    • 6.0.25-1
    • 6.0.25-2
    • 6.0.25-3
    • 6.0.25-3~bpo10+1
    • 6.0.26-1
    • 6.0.26-1~bpo10+1
    • 6.0.27-1
    • 6.0.27-1~bpo10+1
    • 6.0.28-1
    • 6.0.28-1~bpo10+1
    • 6.0.28-2
    • 6.0.29-1
    • 6.0.29-1~bpo10+1
    • 6.0.3-1
    • 6.0.30-1
    • 6.0.30-1~bpo10+1
    • 6.0.30-2
    • 6.0.32-1
    • 6.0.32-2
    • 6.0.32-2~bpo10+1
    • 6.0.32-4
    • 6.0.32-5~bpo10+1
    • 6.0.4-1
    • 6.0.5-1
    • 6.0.6-1
    • 6.0.7-1
    • 6.0.8-1
    • 6.0.8-1~bpo9+1
    • 6.0.9-1
    • 6.0.9-1~bpo9+1
    Affected ranges
    • ECOSYSTEM: < 6.0.32-5

    Update to 6.0.32-5

  • otrs2 Ubuntu:16.04:LTS

    Versions
    • 4.0.10-1
    • 5.0.1-1
    • 5.0.1-2
    • 5.0.2-1
    • 5.0.3-1
    • 5.0.5-1
    • 5.0.6-1
    • 5.0.7-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • otrs2 Ubuntu:18.04:LTS

    Versions
    • 5.0.23-1
    • 5.0.24-1
    • 6.0.1-1
    • 6.0.2-1
    • 6.0.3-1
    • 6.0.4-1
    • 6.0.5-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • otrs2 Ubuntu:20.04:LTS

    Versions
    • 6.0.20-1
    • 6.0.23-2
    • 6.0.24-1
    • 6.0.25-1
    • 6.0.25-2
    • 6.0.25-3
    • 6.0.26-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • otrs2 Ubuntu:22.04:LTS

    Versions
    • 6.0.32-6
    • 6.1.2-1
    • 6.2.1-1
    • 6.2.2-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →