How severe is CVE-2012-0943?

CVE-2012-0943 has a CVSS 2.0 base score of 2.1, rated low severity.

Is CVE-2012-0943 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-0943?

CVE-2012-0943 primarily affects Robert Ancell Lightdm. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-0943?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-0943 published?

CVE-2012-0943 was published on 2014-05-22 and last updated on 2026-06-16.

CVE-2012-0943

CVE-2012-0943 is a low-severity vulnerability in Robert Ancell Lightdm with a CVSS 2.0 base score of 2.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Low (CVSS 2.0 base score 2.1)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Robert Ancell Lightdm
Published: 2014-05-22
Last modified: 2026-06-16

Description

debian/guest-account in Light Display Manager (lightdm) 1.0.x before 1.0.6 and 1.1.x before 1.1.7, as used in Ubuntu Linux 11.10, allows local users to delete arbitrary files via a space in the name of a file in /tmp. NOTE: this identifier was SPLIT per ADT1/ADT2 due to different codebases and affected versions. CVE-2012-6648 has been assigned for the gdm-guest-session issue.

Frequently asked questions

What is CVE-2012-0943?: debian/guest-account in Light Display Manager (lightdm) 1.0.x before 1.0.6 and 1.1.x before 1.1.7, as used in Ubuntu Linux 11.10, allows local users to delete arbitrary files via a space in the name of a file in /tmp. NOTE: this identifier was SPLIT per ADT1/ADT2 due to different codebases and affected versions. CVE-2012-6648 has been assigned for the gdm-guest-session issue.
How severe is CVE-2012-0943?: CVE-2012-0943 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-2012-0943 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-0943?: CVE-2012-0943 primarily affects Robert Ancell Lightdm. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-0943?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-0943 published?: CVE-2012-0943 was published on 2014-05-22 and last updated on 2026-06-16.

References

Affected products (14)

cpe:2.3:a:robert_ancell:lightdm:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:robert_ancell:lightdm:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:robert_ancell:lightdm:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:robert_ancell:lightdm:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:robert_ancell:lightdm:1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:robert_ancell:lightdm:1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:robert_ancell:lightdm:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:robert_ancell:lightdm:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:robert_ancell:lightdm:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:robert_ancell:lightdm:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:robert_ancell:lightdm:1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:robert_ancell:lightdm:1.1.5:*:*:*:*:*:*:*
cpe:2.3:a:robert_ancell:lightdm:1.1.6:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*

More vulnerabilities in Robert Ancell Lightdm

CVE-2012-1111 — Medium (CVSS 4.6): lightdm before 1.0.9 does not properly close file descriptors before opening a child process, which allows local users…
CVE-2013-4459 — Low (CVSS 3.3): LightDM 1.7.5 through 1.8.3 and 1.9.x before 1.9.2 does not apply the AppArmor profile to the Guest account, which…
CVE-2013-4331 — Low (CVSS 2.1): Light Display Manager (aka LightDM) 1.4.x before 1.4.3, 1.6.x before 1.6.2, and 1.7.x before 1.7.14 uses 0664…
CVE-2011-3153 — Low (CVSS 1.9): dmrc.c in Light Display Manager (aka LightDM) before 1.1.1 allows local users to read arbitrary files via a symlink…
CVE-2011-4105 — Low (CVSS 1.9): LightDM before 1.0.6 allows local users to change ownership of arbitrary files via a symlink attack on ~/.Xauthority.

All CVEs affecting Robert Ancell Lightdm →

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