CVE-2021-45444

Published on: Not Yet Published

Last Modified on: 09/30/2022 02:37:00 AM UTC

CVE-2021-45444

Source: Mitre Source: NIST CVE.ORG Print: PDF PDF
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Certain versions of Macos from Apple contain the following vulnerability:

In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.

  • CVE-2021-45444 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 7.8 - HIGH

Attack
Vector ⓘ		 Attack
Complexity		 Privileges
Required		 User
Interaction
LOCAL LOW NONE REQUIRED
Scope Confidentiality
Impact		 Integrity
Impact		 Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 5.1 - MEDIUM

Access
Vector ⓘ		 Access
Complexity		 Authentication
NETWORK HIGH NONE
Confidentiality
Impact		 Integrity
Impact		 Availability
Impact
PARTIAL PARTIAL PARTIAL

CVE References

Description Tags ⓘ Link
About the security content of macOS Big Sur 11.6.6 - Apple Support support.apple.com
text/html
 URL Logo CONFIRM support.apple.com/kb/HT213256
Full Disclosure: APPLE-SA-2022-05-16-2 macOS Monterey 12.4 seclists.org
text/html
 URL Logo FULLDISC 20220516 APPLE-SA-2022-05-16-2 macOS Monterey 12.4
About the security content of macOS Monterey 12.4 - Apple Support support.apple.com
text/html
 URL Logo CONFIRM support.apple.com/kb/HT213257
ZSH - Release Notes zsh.sourceforge.io
text/html
 URL Logo MISC zsh.sourceforge.io/releases.html
About the security content of Security Update 2022-004 Catalina - Apple Support support.apple.com
text/html
 URL Logo CONFIRM support.apple.com/kb/HT213255
[SECURITY] [DLA 2926-1] zsh security update Mailing List
Third Party Advisory
lists.debian.org
text/html
 URL Logo MLIST [debian-lts-announce] 20220218 [SECURITY] [DLA 2926-1] zsh security update
Advisory #63 - RyotaK's Vuln DB vuln.ryotak.me
text/html
 URL Logo MISC vuln.ryotak.me/advisories/63
[SECURITY] Fedora 34 Update: zsh-5.8.1-1.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
 URL Logo FEDORA FEDORA-2022-0a06987c3c
[SECURITY] Fedora 35 Update: zsh-5.8.1-1.fc35 - package-announce - Fedora Mailing-Lists Mailing List
Third Party Advisory
lists.fedoraproject.org
text/html
 URL Logo FEDORA FEDORA-2022-adf0c6d196
Full Disclosure: APPLE-SA-2022-05-16-3 macOS Big Sur 11.6.6 seclists.org
text/html
 URL Logo FULLDISC 20220516 APPLE-SA-2022-05-16-3 macOS Big Sur 11.6.6
Debian -- Security Information -- DSA-5078-1 zsh Third Party Advisory
www.debian.org
Depreciated Link
text/html
 URL Logo DEBIAN DSA-5078
Full Disclosure: APPLE-SA-2022-05-16-4 Security Update 2022-004 Catalina seclists.org
text/html
 URL Logo FULLDISC 20220516 APPLE-SA-2022-05-16-4 Security Update 2022-004 Catalina
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Related QID Numbers

  • 159816 Oracle Enterprise Linux Security Update for zsh (ELSA-2022-2120)
  • 179082 Debian Security Update for zsh (DSA 5078-1)
  • 179087 Debian Security Update for zsh (DLA 2926-1)
  • 198699 Ubuntu Security Notification for Zsh Vulnerabilities (USN-5325-1)
  • 240283 Red Hat Update for zsh (RHSA-2022:2120)
  • 282390 Fedora Security Update for zsh (FEDORA-2022-adf0c6d196)
  • 282417 Fedora Security Update for zsh (FEDORA-2022-0a06987c3c)
  • 296063 Oracle Solaris 11.4 Support Repository Update (SRU) 45.119.2 Missing (CPUAPR2022)
  • 353180 Amazon Linux Security Advisory for zsh : ALAS2-2022-1757
  • 354358 Amazon Linux Security Advisory for zsh : ALAS2022-2022-180
  • 354424 Amazon Linux Security Advisory for zsh : ALAS2022-2022-117
  • 354494 Amazon Linux Security Advisory for zsh : ALAS2022-2022-034
  • 376607 Apple macOS Security Update 2022-004 Catalina (HT213255)
  • 376608 Apple MacOS Big Sur 11.6.6 Not Installed (HT213256)
  • 376612 Apple macOS Monterey 12.4 Not Installed (HT213257)
  • 500834 Alpine Linux Security Update for zsh
  • 671546 EulerOS Security Update for zsh (EulerOS-SA-2022-1594)
  • 671708 EulerOS Security Update for zsh (EulerOS-SA-2022-1778)
  • 690791 Free Berkeley Software Distribution (FreeBSD) Security Update for zsh (d923fb0c-8c2f-11ec-aa85-0800270512f4)
  • 751797 SUSE Enterprise Linux Security Update for zsh (SUSE-SU-2022:0732-1)
  • 751799 SUSE Enterprise Linux Security Update for zsh (SUSE-SU-2022:0733-1)
  • 751806 SUSE Enterprise Linux Security Update for zsh (SUSE-SU-2022:0735-1)
  • 751807 OpenSUSE Security Update for zsh (openSUSE-SU-2022:0735-1)
  • 900674 Common Base Linux Mariner (CBL-Mariner) Security Update for zsh (8573)
  • 901957 Common Base Linux Mariner (CBL-Mariner) Security Update for zsh (8586)
  • 902118 Common Base Linux Mariner (CBL-Mariner) Security Update for zsh (8586-1)
  • 940493 AlmaLinux Security Update for zsh (ALSA-2022:2120)
  • 960224 Rocky Linux Security Update for zsh (RLSA-2022:2120)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System		AppleMacosAllAllAllAll
Operating
System		AppleMac Os XAllAllAllAll
Operating
System		AppleMac Os X10.15.7security_update_2020AllAll
Operating
System		AppleMac Os X10.15.7security_update_2020-001AllAll
Operating
System		AppleMac Os X10.15.7security_update_2020-005AllAll
Operating
System		AppleMac Os X10.15.7security_update_2020-007AllAll
Operating
System		AppleMac Os X10.15.7security_update_2021-001AllAll
Operating
System		AppleMac Os X10.15.7security_update_2021-002AllAll
Operating
System		AppleMac Os X10.15.7security_update_2021-003AllAll
Operating
System		AppleMac Os X10.15.7security_update_2021-006AllAll
Operating
System		AppleMac Os X10.15.7security_update_2021-007AllAll
Operating
System		AppleMac Os X10.15.7security_update_2021-008AllAll
Operating
System		AppleMac Os X10.15.7security_update_2022-001AllAll
Operating
System		AppleMac Os X10.15.7security_update_2022-002AllAll
Operating
System		AppleMac Os X10.15.7security_update_2022-003AllAll
Operating
System		DebianDebian Linux10.0AllAllAll
Operating
System		DebianDebian Linux11.0AllAllAll
Operating
System		DebianDebian Linux9.0AllAllAll
Operating
System		FedoraprojectFedora34AllAllAll
Operating
System		FedoraprojectFedora35AllAllAll
ApplicationZshZshAllAllAllAll
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-006:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-007:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-008:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-001:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-002:*:*:*:*:*:*:
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-003:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*:
  • cpe:2.3:a:zsh:zsh:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @termoshtt ZSH - Release Notes zsh.sourceforge.io/releases.html CVE-2021-45444の修正を含むzsh 5.8.1リリース(´・ω・｀) 2022-02-12 16:33:33
Twitter Icon @ryotkak Zshに脆弱性を報告しました。 (CVE-2021-45444) 5.8.1より前のバージョンのZshは特定のプロンプト設定を使用している場合、プロンプト内のコマンドの出力結果を再帰的に解析します。 これにより、悪意ある文字列を出… twitter.com/i/web/status/1… 2022-02-12 23:57:22
Twitter Icon @ipssignatures The vuln CVE-2021-45444 has a tweet created 0 days ago and retweeted 20 times. twitter.com/ryotkak/status… #pow1rtrtwwcve 2022-02-13 02:06:00
Twitter Icon @CVEreport CVE-2021-45444 : In zsh before 5.8.1, an attacker can achieve code execution if they control a command output insid… twitter.com/i/web/status/1… 2022-02-13 06:05:59
Twitter Icon @ipssignatures The vuln CVE-2021-45444 has a tweet created 0 days ago and retweeted 101 times. twitter.com/ryotkak/status… #pow2rtrtwwcve 2022-02-13 18:06:00
Twitter Icon @MarcCornella ⚠️ Zsh vulnerability: CVE-2021-45444 [1] allows command injection on some prompt sequences. Safe versions: - zsh… twitter.com/i/web/status/1… 2022-02-14 10:39:29
Reddit Logo Icon /r/netcve CVE-2021-45444 2022-02-13 06:38:35
Reddit Logo Icon /r/k12cybersecurity MS-ISAC CYBERSECURITY ADVISORY - Multiple Vulnerabilities in Apple Products Could Allow for Arbitrary Code Execution - PATCH: NOW 2022-05-17 13:11:14
Reddit Logo Icon /r/k12cybersecurity UPDATED MS-ISAC CYBERSECURITY ADVISORY - Multiple Vulnerabilities in Apple Products Could Allow for Arbitrary Code Execution - PATCH: NOW 2022-05-18 14:59:44
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