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CVE-2021-43527

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2022-0191-03
Posted Jan 20, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-0191-03 - OpenShift Virtualization is Red Hat's virtualization solution designed for Red Hat OpenShift Container Platform. This advisory contains OpenShift Virtualization 4.9.2 images.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-31525, CVE-2021-33195, CVE-2021-33197, CVE-2021-33198, CVE-2021-34558, CVE-2021-42574, CVE-2021-43527
MD5 | 47ce79c4c131f6c66d702d494119aef6
Red Hat Security Advisory 2021-5107-06
Posted Dec 17, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5107-06 - Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. Issues addressed include code execution and denial of service vulnerabilities.

tags | advisory, denial of service, vulnerability, code execution
systems | linux, redhat
advisories | CVE-2021-4104, CVE-2021-43527, CVE-2021-44228, CVE-2021-45046
MD5 | 1a9c460b3666bd013440836e6d08a163
Red Hat Security Advisory 2021-5053-03
Posted Dec 9, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5053-03 - The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host. Red Hat Virtualization Hosts are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. Issues addressed include a use-after-free vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-36385, CVE-2021-43527
MD5 | c23b5fb872e243031160cb17d1196083
Ubuntu Security Notice USN-5168-4
Posted Dec 8, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5168-4 - USN-5168-3 fixed a vulnerability in NSS. Unfortunately that update introduced a regression that could break SSL connections. This update fixes the problem. Tavis Ormandy discovered that NSS incorrectly handled verifying DSA/RSA-PSS signatures. A remote attacker could use this issue to cause NSS to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-43527
MD5 | 268760165ba1221a3f3d235bd7035bf9
Red Hat Security Advisory 2021-5006-04
Posted Dec 8, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5006-04 - The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-43527
MD5 | e8d6193f1557f980fc5e0395f21b259e
Red Hat Security Advisory 2021-4994-03
Posted Dec 8, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4994-03 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-43527
MD5 | 089c057d38ae26701786ddd07b018603
Red Hat Security Advisory 2021-4969-03
Posted Dec 7, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4969-03 - Mozilla Thunderbird is a standalone mail and newsgroup client.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-43527
MD5 | 5f1206e98175a7f88ca2cd5fa7325494
Red Hat Security Advisory 2021-4953-03
Posted Dec 7, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4953-03 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-43527
MD5 | 6f25ccbb14a409ebb8214bbb9f8ece92
Red Hat Security Advisory 2021-4954-04
Posted Dec 7, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4954-04 - Mozilla Thunderbird is a standalone mail and newsgroup client.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-43527
MD5 | d0a920ca6d3a58544ea4f69b2603128e
Red Hat Security Advisory 2021-4933-03
Posted Dec 7, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4933-03 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-43527
MD5 | 4c5c432eef8dbe7e0caf0a3266dff4c4
Red Hat Security Advisory 2021-4932-03
Posted Dec 7, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4932-03 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-43527
MD5 | 3d8e0328152da1212d7e19d952ac0aa3
Red Hat Security Advisory 2021-4946-03
Posted Dec 7, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4946-03 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-43527
MD5 | 52e3ea1190eea19a48fd61d23126be01
Red Hat Security Advisory 2021-4919-03
Posted Dec 3, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4919-03 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-43527
MD5 | c1744313d4ad1321ad26d3cf9f45db85
Red Hat Security Advisory 2021-4909-03
Posted Dec 2, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4909-03 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-43527
MD5 | b3e47e393f4bda014ff475ba22aa4a80
Red Hat Security Advisory 2021-4907-04
Posted Dec 2, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4907-04 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-43527
MD5 | ca6977cc1deb4a1e02a916198ae5527d
Red Hat Security Advisory 2021-4903-05
Posted Dec 2, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4903-05 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-43527
MD5 | 212d78507e67f41f38b65ed37b5e5003
Red Hat Security Advisory 2021-4904-05
Posted Dec 2, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4904-05 - Network Security Services is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-43527
MD5 | e0f8ae8d68cd0a904fb6eab268e5de46
Ubuntu Security Notice USN-5168-3
Posted Dec 2, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5168-3 - USN-5168-1 fixed a vulnerability in NSS. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Tavis Ormandy discovered that NSS incorrectly handled verifying DSA/RSA-PSS signatures. A remote attacker could use this issue to cause NSS to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-43527
MD5 | 106341b60664441783f0031ef8f6265a
Ubuntu Security Notice USN-5168-1
Posted Dec 2, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5168-1 - Tavis Ormandy discovered that NSS incorrectly handled verifying DSA/RSA-PSS signatures. A remote attacker could use this issue to cause NSS to crash, resulting in a denial of service, or possibly execute arbitrary code.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-43527
MD5 | 0e4142ce22ed9c20ba17227b9f26297f
Ubuntu Security Notice USN-5168-2
Posted Dec 2, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5168-2 - Tavis Ormandy discovered that NSS, included with Thunderbird, incorrectly handled verifying DSA/RSA-PSS signatures. A remote attacker could use this issue to cause Thunderbird to crash, resulting in a denial of service, or possibly execute arbitrary code.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-43527
MD5 | cceb150b416aa2150d692f26de8cb22b
NSS Signature Validation Memory Corruption
Posted Dec 1, 2021
Authored by Tavis Ormandy, Google Security Research

NSS (Network Security Services), Mozilla project's cross-platform security library, suffers from a memory corruption flaw when validating ECDSA signatures.

tags | exploit
advisories | CVE-2021-43527
MD5 | 5166911d2f1f55ae05e8bf3fb9914042
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