CVE-2021-35942

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Summary

CVECVE-2021-35942
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-07-22 18:15:23 UTC
Updated2026-10-14 12:17:13 UTC
DescriptionThe wordexp function in the GNU C Library (aka glibc) through 2.33 may crash or read arbitrary memory in parse_param (in posix/wordexp.c) when called with an untrusted, crafted pattern, potentially resulting in a denial of service or disclosure of information. This occurs because atoi was used but strtoul should have been used to ensure correct calculations.

Risk And Classification

Primary CVSS: v3.1 9.1 CRITICAL from [email protected]

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

Problem Types: CWE-190 | CWE-704 | n/a | CWE-704 CWE-704 Incorrect Type Conversion or Cast

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
3.1ADPDECLARED9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
2.0[email protected]Primary6.4AV:N/AC:L/Au:N/C:P/I:N/A:P

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
Partial

AV:N/AC:L/Au:N/C:P/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 10.0 All All All
Application Gnu Glibc All All All All
Application Netapp Active Iq Unified Manager - All All All
Application Netapp E-series Santricity Os Controller All All All All
Application Netapp Hci Management Node - All All All
Application Netapp Ontap Select Deploy Administration Utility - All All All
Application Netapp Solidfire - All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
GNU C Library: Multiple Vulnerabilities (GLSA 202208-24) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
Security Exceptions - glibc wiki af854a3a-2127-422b-91ae-364da2661108 sourceware.org Not Applicable
CVE-2021-35942 GNU C Library (glibc) Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
cert-portal.siemens.com/productcert/html/ssa-831302.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
28011 – (CVE-2021-35942) Wild read in wordexp (parse_param) (CVE-2021-35942) af854a3a-2127-422b-91ae-364da2661108 sourceware.org Issue Tracking, Third Party Advisory
[SECURITY] [DLA 3152-1] glibc security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
sourceware.org Git - glibc.git/commit af854a3a-2127-422b-91ae-364da2661108 sourceware.org Broken Link
sourceware.org Git - glibc.git/commit MITRE sourceware.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159493 Oracle Enterprise Linux Security Update for glibc (ELSA-2021-4358)
  • 159561 Oracle Enterprise Linux Security Update for glibc (ELSA-2021-9560)
  • 179862 Debian Security Update for glibc (CVE-2021-35942)
  • 181138 Debian Security Update for glibc (DLA 3152-1)
  • 198685 Ubuntu Security Notification for GNU C Library Vulnerabilities (USN-5310-1)
  • 239791 Red Hat Update for glibc security (RHSA-2021:4358)
  • 281716 Fedora Security Update for glibc (FEDORA-2021-e14e86e40e)
  • 281729 Fedora Security Update for glibc (FEDORA-2021-3f4132bb56)
  • 352840 Amazon Linux Security Advisory for glibc: ALAS2-2021-1703
  • 591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
  • 670703 EulerOS Security Update for glibc (EulerOS-SA-2021-2461)
  • 670768 EulerOS Security Update for glibc (EulerOS-SA-2021-2526)
  • 670792 EulerOS Security Update for glibc (EulerOS-SA-2021-2550)
  • 670880 EulerOS Security Update for compat-glibc (EulerOS-SA-2021-2653)
  • 671025 EulerOS Security Update for glibc (EulerOS-SA-2021-2660)
  • 671239 EulerOS Security Update for compat-glibc (EulerOS-SA-2022-1158)
  • 671255 EulerOS Security Update for glibc (EulerOS-SA-2022-1164)
  • 710605 Gentoo Linux GNU C Library Multiple Vulnerabilities (GLSA 202208-24)
  • 750897 SUSE Enterprise Linux Security Update for glibc (SUSE-SU-2021:2480-1)
  • 751196 SUSE Enterprise Linux Security Update for glibc (SUSE-SU-2021:3289-1)
  • 751200 OpenSUSE Security Update for glibc (openSUSE-SU-2021:3291-1)
  • 751212 SUSE Enterprise Linux Security Update for glibc (SUSE-SU-2021:3385-1)
  • 751242 OpenSUSE Security Update for glibc (openSUSE-SU-2021:1374-1)
  • 900060 CBL-Mariner Linux Security Update for glibc 2.28
  • 903139 Common Base Linux Mariner (CBL-Mariner) Security Update for glibc (4820)
  • 940330 AlmaLinux Security Update for glibc (ALSA-2021:4358)
  • 960043 Rocky Linux Security Update for glibc (RLSA-2021:4358)

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