CVE-2019-20373
published 2020-01-09CVE-2019-20373: 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…
PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.43%
35.2th percentile
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
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| ltsp | ldm | <= 2.18.06 | — |
| ltsp | ldm | >= 0 < 2:2.18.06-1+deb10u1build0.20.04.1 | 2:2.18.06-1+deb10u1build0.20.04.1 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.2HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
osv7.8HIGH
vendor_ubuntu7.8HIGH
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GHSA
GHSA-7fp6-mjg4-r496: LTSP LDM through 2
ghsa_unreviewed·2022-05-24
CVE-2019-20373 [HIGH] GHSA-7fp6-mjg4-r496: LTSP LDM through 2
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.
OSV
ldm vulnerabilities
osv·2020-09-22·CVSS 7.8
CVE-2019-20373 [HIGH] ldm vulnerabilities
ldm vulnerabilities
Veeti Veteläinen discovered that the LTSP Display Manager (ldm)
incorrectly handled user logins from unsupported shells. A local attacker
could possibly use this issue to gain root privileges. (CVE-2019-20373)
OSV
CVE-2019-20373: LTSP LDM through 2
osv·2020-01-09·CVSS 7.8
CVE-2019-20373 [HIGH] CVE-2019-20373: LTSP LDM through 2
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.
Ubuntu
LTSP Display Manager vulnerabilities
vendor_ubuntu·2020-09-22·CVSS 7.8
CVE-2019-20373 [HIGH] LTSP Display Manager vulnerabilities
Title: LTSP Display Manager vulnerabilities
Summary: LTSP Display Manager could be made to escalate user privileges.
Veeti Veteläinen discovered that the LTSP Display Manager (ldm)
incorrectly handled user logins from unsupported shells. A local attacker
could possibly use this issue to gain root privileges. (CVE-2019-20373)
Instructions: In general, a standard system update will make all the necessary changes.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-20373 ldm: incorrectly handled user logins from unsupported shells [epel-6]
bugzilla·2020-09-24·CVSS 7.8
CVE-2019-20373 [HIGH] CVE-2019-20373 ldm: incorrectly handled user logins from unsupported shells [epel-6]
CVE-2019-20373 ldm: incorrectly handled user logins from unsupported shells [epel-6]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-6.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
Discussion:
Use the following template to for th
Bugzilla
CVE-2019-20373 ldm: incorrectly handled user logins from unsupported shells
bugzilla·2020-09-24·CVSS 7.8
CVE-2019-20373 [HIGH] CVE-2019-20373 ldm: incorrectly handled user logins from unsupported shells
CVE-2019-20373 ldm: incorrectly handled user logins from unsupported shells
LTSP Display Manager (ldm) incorrectly handled user logins from unsupported shells. A local attacker could possibly use this issue to gain root privileges.
References:
https://launchpad.net/ubuntu/+source/ldm/2:2.18.06-1+deb10u1build0.20.04.1
Discussion:
Created ldm tracking bugs for this issue:
Affects: epel-6 [bug 1882316]
---
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
https://git.launchpad.net/~ltsp-upstream/ltsp/+git/ldm/commit/?id=c351ac69ef63ed6c84221cef73e409059661b8bahttps://lists.debian.org/debian-lts-announce/2020/01/msg00007.htmlhttps://www.debian.org/security/2020/dsa-4601https://git.launchpad.net/~ltsp-upstream/ltsp/+git/ldm/commit/?id=c351ac69ef63ed6c84221cef73e409059661b8bahttps://lists.debian.org/debian-lts-announce/2020/01/msg00007.htmlhttps://www.debian.org/security/2020/dsa-4601
2020-01-09
Published