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
Link Resource
http://seclists.org/fulldisclosure/2020/May/49 Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2020/May/53 Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2020/May/55 Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2020/May/59 Mailing List Third Party Advisory
http://zsh.sourceforge.net/releases.html Release Notes Third Party Advisory
https://github.com/XMB5/zsh-privileged-upgrade Broken Link
https://lists.debian.org/debian-lts-announce/2020/03/msg00004.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FP64FFIZI2CKQOEAOI5A72PVQULE7ZZC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PN5V7MPHRRP7QNHOEK56S7QGRU53WUN6/
https://security.gentoo.org/glsa/202003-55 Third Party Advisory
https://support.apple.com/HT211168 Third Party Advisory
https://support.apple.com/HT211170 Third Party Advisory
https://support.apple.com/HT211171 Third Party Advisory
https://support.apple.com/HT211175 Third Party Advisory
https://support.apple.com/kb/HT211168 Third Party Advisory
https://support.apple.com/kb/HT211170 Third Party Advisory
https://support.apple.com/kb/HT211171 Third Party Advisory
https://support.apple.com/kb/HT211175 Third Party Advisory
https://www.zsh.org/mla/zsh-announce/141 Release Notes Vendor Advisory
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: mitre

Published: 2020-02-24T13:09:43

Updated: 2020-12-01T06:06:16

Reserved: 2019-12-27T00:00:00


Link: CVE-2019-20044

JSON object: View

cve-icon NVD Information

Status : Modified

Published: 2020-02-24T14:15:11.667

Modified: 2023-11-07T03:08:38.823


Link: CVE-2019-20044

JSON object: View

cve-icon Redhat Information

No data.

CWE