CVEdetails.com the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register
  Take a third party risk management course for FREE
Vulnerability Feeds & WidgetsNew   www.itsecdb.com  

Vulnerability Details : CVE-2021-43527

NSS (Network Security Services) versions prior to 3.73 or 3.68.1 ESR are vulnerable to a heap overflow when handling DER-encoded DSA or RSA-PSS signatures. Applications using NSS for handling signatures encoded within CMS, S/MIME, PKCS \#7, or PKCS \#12 are likely to be impacted. Applications using NSS for certificate validation or other TLS, X.509, OCSP or CRL functionality may be impacted, depending on how they configure NSS. *Note: This vulnerability does NOT impact Mozilla Firefox.* However, email clients and PDF viewers that use NSS for signature verification, such as Thunderbird, LibreOffice, Evolution and Evince are believed to be impacted. This vulnerability affects NSS < 3.73 and NSS < 3.68.1.
Publish Date : 2021-12-08 Last Update Date : 2022-04-20
Search Twitter   Search YouTube   Search Google

- CVSS Scores & Vulnerability Types

CVSS Score
7.5
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Overflow
CWE ID 787

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2021:4903: nss security update (Critical) oval:com.redhat.rhsa:def:20214903 unix
RHSA-2021:4904: nss security update (Critical) oval:com.redhat.rhsa:def:20214904 unix
RHSA-2021:4907: nss security update (Critical) oval:com.redhat.rhsa:def:20214907 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2021-43527

# Product Type Vendor Product Version Update Edition Language
1 Application Mozilla NSS * * * * Version Details Vulnerabilities
2 Application Mozilla Nss Esr * * * * Version Details Vulnerabilities
3 Application Netapp Cloud Backup - * * * Version Details Vulnerabilities
4 Application Netapp E-series Santricity Os Controller * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Mozilla NSS 1
Mozilla Nss Esr 1
Netapp Cloud Backup 1
Netapp E-series Santricity Os Controller 1

- References For CVE-2021-43527

https://bugzilla.mozilla.org/show_bug.cgi?id=1737470
https://www.mozilla.org/security/advisories/mfsa2021-51/
https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_73_RTM/
https://www.oracle.com/security-alerts/cpuapr2022.html
https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdf CONFIRM
https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_68_1_RTM/
https://security.netapp.com/advisory/ntap-20211229-0002/ CONFIRM

- Metasploit Modules Related To CVE-2021-43527

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site. OVAL is a registered trademark of The MITRE Corporation and the authoritative source of OVAL content is MITRE's OVAL web site.
Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.