7.8

CVE-2019-18276

Exploit
An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11. By default, if Bash is run with its effective UID not equal to its real UID, it will drop privileges by setting its effective UID to its real UID. However, it does so incorrectly. On Linux and other systems that support "saved UID" functionality, the saved UID is not dropped. An attacker with command execution in the shell can use "enable -f" for runtime loading of a new builtin, which can be a shared object that calls setuid() and therefore regains privileges. However, binaries running with an effective UID of 0 are unaffected.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Gnu ≫ Bash Version <= 5.0
Gnu ≫ Bash Version 5.0 Update beta1
Gnu ≫ Bash Version 5.0 Update beta2
Gnu ≫ Bash Version 5.0 Update patch1
Gnu ≫ Bash Version 5.0 Update patch10
Gnu ≫ Bash Version 5.0 Update patch11
Gnu ≫ Bash Version 5.0 Update patch2
Gnu ≫ Bash Version 5.0 Update patch3
Gnu ≫ Bash Version 5.0 Update patch4
Gnu ≫ Bash Version 5.0 Update patch5
Gnu ≫ Bash Version 5.0 Update patch6
Gnu ≫ Bash Version 5.0 Update patch7
Gnu ≫ Bash Version 5.0 Update patch8
Gnu ≫ Bash Version 5.0 Update patch9
Gnu ≫ Bash Version 5.0 Update rc1
Netapp ≫ Hci Management Node Version -
Netapp ≫ Oncommand Unified Manager SwPlatform vmware_vsphere Version >= 9.5
Netapp ≫ Solidfire Version -
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 2.61% 0.834
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NIST 7.2 3.9 10
AV:L/AC:L/Au:N/C:C/I:C/A:C
CISA-ADP 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-273 Improper Check for Dropped Privileges

The product attempts to drop privileges but does not check or incorrectly checks to see if the drop succeeded.

https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
https://www.oracle.com/security-alerts/cpuapr2022.html
Patch
Third Party Advisory
http://packetstormsecurity.com/files/155498/Bash-5.0-Patch-11-Privilege-Escalation.html
Third Party Advisory
Exploit
VDB Entry
https://github.com/bminor/bash/commit/951bdaad7a18cc0dc1036bba86b18b90874d39ff
Patch
Third Party Advisory
https://security.gentoo.org/glsa/202105-34
Third Party Advisory
https://security.netapp.com/advisory/ntap-20200430-0003/
Third Party Advisory
https://www.youtube.com/watch?v=-wGtxJ8opa8
Third Party Advisory
Exploit