CVE & CISA-KEV CatalogNVD
CVE-2021-34558
MEDIUMEPSS 94th pctl6.5
CVSS v3
Description
The crypto/tls package of Go through 1.16.5 does not properly assert that the type of public key in an X.509 certificate matches the expected type when doing a RSA based key exchange, allowing a malicious TLS server to cause a TLS client to panic.
How to fix
Remediation Available
golang-1.15Debian
Fixed in:1.15.9-6CVE-2021-34558
aardvark-dns-2:1.10.0Red Hat / RHEL
Fixed in:1.module+el8.10.0+21209+52deeb51.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21209+52deeb51.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21209+52deeb51.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21209+52deeb51.src::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21209+52deeb51.aarch64::container-tools:rhel8RHSA-2024:2988
aardvark-dns-2:1.10.0Rocky
Fixed in:1.module+el8.10.0+21209+52deeb51.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21209+52deeb51.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21209+52deeb51.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21209+52deeb51.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21209+52deeb51.src::container-tools:rhel8RHSA-2024:2988
buildah-2:1.33.6Red Hat / RHEL
Fixed in:2.module+el8.10.0+21371+46937ece.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.src::container-tools:rhel8RHSA-2024:2988
buildah-2:1.33.6Rocky
Fixed in:2.module+el8.10.0+21371+46937ece.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.src::container-tools:rhel8RHSA-2024:2988
buildah-debuginfo-2:1.33.6Red Hat / RHEL
Fixed in:2.module+el8.10.0+21371+46937ece.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.ppc64le::container-tools:rhel8RHSA-2024:2988
buildah-debuginfo-2:1.33.6Rocky
Fixed in:2.module+el8.10.0+21371+46937ece.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.s390x::container-tools:rhel8RHSA-2024:2988
buildah-debugsource-2:1.33.6Rocky
Fixed in:2.module+el8.10.0+21371+46937ece.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.x86_64::container-tools:rhel8RHSA-2024:2988
buildah-debugsource-2:1.33.6Red Hat / RHEL
Fixed in:2.module+el8.10.0+21371+46937ece.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.s390x::container-tools:rhel8RHSA-2024:2988
buildah-tests-2:1.33.6Rocky
Fixed in:2.module+el8.10.0+21371+46937ece.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.ppc64le::container-tools:rhel8RHSA-2024:2988
buildah-tests-2:1.33.6Red Hat / RHEL
Fixed in:2.module+el8.10.0+21371+46937ece.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.ppc64le::container-tools:rhel8RHSA-2024:2988
buildah-tests-debuginfo-2:1.33.6Rocky
Fixed in:2.module+el8.10.0+21371+46937ece.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.s390x::container-tools:rhel8RHSA-2024:2988
buildah-tests-debuginfo-2:1.33.6Red Hat / RHEL
Fixed in:2.module+el8.10.0+21371+46937ece.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21371+46937ece.s390x::container-tools:rhel8RHSA-2024:2988
cockpit-podman-0:84.1Rocky
Fixed in:1.module+el8.10.0+21373+0d273fdf.noarch::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21373+0d273fdf.src::container-tools:rhel8RHSA-2024:2988
cockpit-podman-0:84.1Red Hat / RHEL
Fixed in:1.module+el8.10.0+21373+0d273fdf.src::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21373+0d273fdf.noarch::container-tools:rhel8RHSA-2024:2988
conmon-3:2.1.10Red Hat / RHEL
Fixed in:1.module+el8.10.0+21077+98b84d8a.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.src::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.aarch64::container-tools:rhel8RHSA-2024:2988
conmon-3:2.1.10Rocky
Fixed in:1.module+el8.10.0+21077+98b84d8a.src::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.aarch64::container-tools:rhel8RHSA-2024:2988
conmon-debuginfo-3:2.1.10Rocky
Fixed in:1.module+el8.10.0+21077+98b84d8a.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.x86_64::container-tools:rhel8RHSA-2024:2988
conmon-debuginfo-3:2.1.10Red Hat / RHEL
Fixed in:1.module+el8.10.0+21077+98b84d8a.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.aarch64::container-tools:rhel8RHSA-2024:2988
conmon-debugsource-3:2.1.10Red Hat / RHEL
Fixed in:1.module+el8.10.0+21077+98b84d8a.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.s390x::container-tools:rhel8RHSA-2024:2988
conmon-debugsource-3:2.1.10Rocky
Fixed in:1.module+el8.10.0+21077+98b84d8a.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:1.module+el8.10.0+21077+98b84d8a.x86_64::container-tools:rhel8RHSA-2024:2988
container-selinux-2:2.229.0Red Hat / RHEL
Fixed in:2.module+el8.10.0+21196+3f0abbca.src::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21196+3f0abbca.noarch::container-tools:rhel8RHSA-2024:2988
container-selinux-2:2.229.0Rocky
Fixed in:2.module+el8.10.0+21196+3f0abbca.src::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21196+3f0abbca.noarch::container-tools:rhel8RHSA-2024:2988
containernetworking-plugins-1:1.4.0Rocky
Fixed in:2.module+el8.10.0+21366+f9cb49f8.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.src::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.ppc64le::container-tools:rhel8RHSA-2024:2988
containernetworking-plugins-1:1.4.0Red Hat / RHEL
Fixed in:2.module+el8.10.0+21366+f9cb49f8.src::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.x86_64::container-tools:rhel8RHSA-2024:2988
containernetworking-plugins-debuginfo-1:1.4.0Rocky
Fixed in:2.module+el8.10.0+21366+f9cb49f8.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.x86_64::container-tools:rhel8RHSA-2024:2988
containernetworking-plugins-debuginfo-1:1.4.0Red Hat / RHEL
Fixed in:2.module+el8.10.0+21366+f9cb49f8.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.ppc64le::container-tools:rhel8RHSA-2024:2988
containernetworking-plugins-debugsource-1:1.4.0Rocky
Fixed in:2.module+el8.10.0+21366+f9cb49f8.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.aarch64::container-tools:rhel8RHSA-2024:2988
containernetworking-plugins-debugsource-1:1.4.0Red Hat / RHEL
Fixed in:2.module+el8.10.0+21366+f9cb49f8.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.s390x::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:2.module+el8.10.0+21366+f9cb49f8.ppc64le::container-tools:rhel8RHSA-2024:2988
containers-common-2:1Red Hat / RHEL
Fixed in:81.module+el8.10.0+21340+c6c7475a.aarch64::container-tools:rhel8RHSA-2024:2988
Fixed in:81.module+el8.10.0+21340+c6c7475a.x86_64::container-tools:rhel8RHSA-2024:2988
Fixed in:81.module+el8.10.0+21340+c6c7475a.ppc64le::container-tools:rhel8RHSA-2024:2988
Fixed in:81.module+el8.10.0+21340+c6c7475a.src::container-tools:rhel8RHSA-2024:2988
Fixed in:81.module+el8.10.0+21340+c6c7475a.s390x::container-tools:rhel8RHSA-2024:2988
This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Exploit Intelligence
6.98%probability of exploitation in 30 days
94thpercentile
High risk: more likely to be exploited than 94% of all known CVEs.
References
Patch2
Vendor Advisory1
Third-Party Advisory4
Related Vulnerabilities
Other CWE-295 (Improper Certificate Validation) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2015-4000 | Low | 3.7 | 100% | - | Fix |
| CVE-2020-0601 | High | 8.1 | 89% | KEV | Fix |
| CVE-2009-3555 | Critical | 9.8 | 87% | - | Fix |
| CVE-2022-26923 | High | 8.8 | 84% | KEV | Fix |
| CVE-2023-27823 | Critical | 9.8 | 53% | - | - |
| CVE-2022-42979 | High | 8.8 | 24% | - | - |
Common questions
How do I fix CVE-2021-34558?
Published advisories record a fix for 132 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2021-34558 being actively exploited?
Not that we know of. CVE-2021-34558 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 7.0% is the estimated probability that it will be exploited in the next 30 days. That is higher than 94% of all scored CVEs.
How severe is CVE-2021-34558?
CVE-2021-34558 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2021-34558 affect?
Published advisories record a fix for golang-1.15 (Debian), aardvark-dns-2:1.10.0 (Red Hat / RHEL), aardvark-dns-2:1.10.0 (Rocky), buildah-2:1.33.6 (Red Hat / RHEL), and 128 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2021-34558
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<a href="https://tridentstack.com/cve/CVE-2021-34558"><img src="https://tridentstack.com/cve/badge/CVE-2021-34558.svg" alt="CVE-2021-34558"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.