CVE-2023-5422: otrs ag otrs Improper Certificate Validation
Vulnerability summary
CVE-2023-5422 is a critical (CVSS 9.1) Improper Certificate Validation vulnerability in otrs ag otrs. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 24.8% of scored vulnerabilities.
Timeline
- 16-10-2023PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
The functions to fetch e-mail via POP3 or IMAP as well as sending e-mail via SMTP use OpenSSL for static SSL or TLS based communication. As the SSL_get_verify_result() function is not used the certificated is trusted always and it can not be ensured that the certificate satisfies all necessary security requirements. This could allow an attacker to use an invalid certificate to claim to be a trusted host, use expired certificates, or conduct other attacks that could be detected if the certificate is properly validated. This issue affects OTRS: from 7.0.X before 7.0.47, from 8.0.X before 8.0.37; ((OTRS)) Community Edition: from 6.0.X through 6.0.34.
CVSS metrics
3 scores · 3 sources · 1 version- CVE.orgCNA8.7HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:NDiffers
- OSV · UbuntuEcosystem advisory · calculated9.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS trend
Probability
0.33%
Chance of exploitation in the next 30 days
Percentile
25%
Versus all other CVEs
30-day change
+0.05 pp
From 0.28% on 22-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Otrs ag2 products
- otrs≥ 7.0.x, < 7.0.47 | ≥ 8.0.x, < 8.0.37
- ((otrs)) community edition≥ 6.0.x, ≤ 6.0.34
Ubuntu2 products
- otrs2All versions (No fix recorded)
- znunyAll versions (No fix recorded)
Otrs1 product
- otrs≥ 6.0.0, ≤ 6.0.34 | ≥ 7.0.0, < 7.0.47 | ≥ 8.0.0, < 8.0.37
3 vendors · 5 products