Is CVE-2019-20044 in the CISA KEV catalog?

No. CVE-2019-20044 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-20044?

CVE-2019-20044 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2019-20044?

CVE-2019-20044 has an EPSS score of 0.50% (39th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-20044?

Upgrade zsh on debian 11 to 5.8-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2019-20044

HIGH

7.8

CVSS v3

NVD

Description

In Zsh before 5.8, attackers able to execute commands can regain privileges dropped by the --no-PRIVILEGED option. Zsh fails to overwrite the saved uid, so the original privileges can be restored by executing MODULE_PATH=/dir/with/module zmodload with a module that calls setuid().

CWE-273

How to fix

Remediation Available

zshDebian

Fixed in:5.8-1CVE-2019-20044

zshUbuntu

Fixed in:5.1.1-1ubuntu2.3+esm1USN-5325-1

Fixed in:5.4.2-3ubuntu3.2USN-5325-1

Fixed in:5.8-3ubuntu1.1USN-5325-1

zsh-staticUbuntu

Fixed in:5.1.1-1ubuntu2.3+esm1USN-5325-1

Fixed in:5.4.2-3ubuntu3.2USN-5325-1

Fixed in:5.8-3ubuntu1.1USN-5325-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.50%probability of exploitation in 30 days

39thpercentile

Low risk: more likely to be exploited than 39% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.