What’s Vulnerable › Vulnerabilities

CVE-2019-20373

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-01-09 · updated 2026-06-17

Description

LTSP LDM through 2.18.06 allows fat-client root access because the LDM_USERNAME variable may have an empty value if the user's shell lacks support for Bourne shell syntax. This is related to a run-x-session script.

Affected products

• Debian Linux: 8.0, 9.0, 10.0
• Ltsp Ldm: through 2.18.06

References

• https://git.launchpad.net/~ltsp-upstream/ltsp/+git/ldm/commit/?id=c351ac69ef63ed6c84221cef73e409059661b8ba
• https://lists.debian.org/debian-lts-announce/2020/01/msg00007.html
• https://www.debian.org/security/2020/dsa-4601
• https://git.launchpad.net/~ltsp-upstream/ltsp/+git/ldm/commit/?id=c351ac69ef63ed6c84221cef73e409059661b8ba
• https://lists.debian.org/debian-lts-announce/2020/01/msg00007.html
• https://www.debian.org/security/2020/dsa-4601

Get alerted when CVE-2019-20373 or the next vulnerability affects your stack