csaf_redhat - rhsa-2020

rhsa-2020_0903

Vulnerability from csaf_redhat

Published

2020-03-19 11:31

Modified

2024-11-22 14:34

Summary

Red Hat Security Advisory: zsh security update

Notes

Topic

An update for zsh is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details

The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more. Security Fix(es): * zsh: insecure dropping of privileges when unsetting PRIVILEGED option (CVE-2019-20044) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

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      "title": "zsh: insecure dropping of privileges when unsetting PRIVILEGED option"
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}

cve-2019-20044

Vulnerability from cvelistv5

Published

2020-02-24 13:09

Modified

2024-08-05 02:32

Severity ?

Summary

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().

References

▼	URL	Tags
	http://zsh.sourceforge.net/releases.html	x_refsource_MISC
	https://github.com/XMB5/zsh-privileged-upgrade	x_refsource_MISC
	https://www.zsh.org/mla/zsh-announce/141	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2020/03/msg00004.html	mailing-list, x_refsource_MLIST
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FP64FFIZI2CKQOEAOI5A72PVQULE7ZZC/	vendor-advisory, x_refsource_FEDORA
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PN5V7MPHRRP7QNHOEK56S7QGRU53WUN6/	vendor-advisory, x_refsource_FEDORA
	https://security.gentoo.org/glsa/202003-55	vendor-advisory, x_refsource_GENTOO
	https://support.apple.com/kb/HT211170	x_refsource_CONFIRM
	https://support.apple.com/kb/HT211175	x_refsource_CONFIRM
	https://support.apple.com/kb/HT211171	x_refsource_CONFIRM
	https://support.apple.com/kb/HT211168	x_refsource_CONFIRM
	http://seclists.org/fulldisclosure/2020/May/49	mailing-list, x_refsource_FULLDISC
	http://seclists.org/fulldisclosure/2020/May/55	mailing-list, x_refsource_FULLDISC
	http://seclists.org/fulldisclosure/2020/May/53	mailing-list, x_refsource_FULLDISC
	http://seclists.org/fulldisclosure/2020/May/59	mailing-list, x_refsource_FULLDISC
	https://support.apple.com/HT211168	x_refsource_CONFIRM
	https://support.apple.com/HT211170	x_refsource_CONFIRM
	https://support.apple.com/HT211171	x_refsource_CONFIRM
	https://support.apple.com/HT211175	x_refsource_CONFIRM
	https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html	mailing-list, x_refsource_MLIST

Impacted products

Vendor

Product

Version

▼

n/a

Version: n/a

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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