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.
Published 2021-06-14 08:15:10
Updated 2023-08-31 03:15:12
Source OTRS AG
View at NVD,   CVE.org
Vulnerability category: Denial of service

Products affected by CVE-2021-21439

  • Otrs » Otrs
    Versions from including (>=) 8.0.0 and before (<) 8.0.14
    cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
  • Otrs » Otrs
    Versions from including (>=) 7.0.0 and before (<) 7.0.27
    cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
  • Otrs » Otrs » Community Edition
    Versions from including (>=) 6.0.1 and up to, including, (<=) 6.0.30
    cpe:2.3:a:otrs:otrs:*:*:*:*:community:*:*:*

Exploit prediction scoring system (EPSS) score for CVE-2021-21439

0.11%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 43 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-21439

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
MEDIUM AV:N/AC:M/Au:N/C:N/I:N/A:P
8.6
2.9
NIST
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
2.8
3.6
NIST
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
2.8
3.6
OTRS AG

CWE ids for CVE-2021-21439

References for CVE-2021-21439

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