Bug 1821896 (CVE-2020-11501)
| Summary: | CVE-2020-11501 gnutls: DTLS client hello contains a random value of all zeroes | ||
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| Product: | [Other] Security Response | Reporter: | Guilherme de Almeida Suckevicz <gsuckevi> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | ansasaki, cfergeau, crypto-team, deallen, dueno, elima, erik-fedora, fidencio, jv+fedora, marcandre.lureau, mike, nmavrogi, pemensik, pspacek, rh-spice-bugs, rjones, tmraz |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | gnutls 3.6.13 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A cryptographic weakness was found in the way DLTS implementation of GnuTLS, used zeros in place of random numbers. This flaw can break the security guarantee of the DTLS protocol.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-04-30 22:31:52 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1821898, 1821899, 1822005, 1826176 | ||
| Bug Blocks: | 1821900 | ||
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Description
Guilherme de Almeida Suckevicz
2020-04-07 19:15:24 UTC
Created gnutls tracking bugs for this issue: Affects: fedora-all [bug 1821898] Created mingw-gnutls tracking bugs for this issue: Affects: fedora-all [bug 1821899] Statement: The earliest affected version is gnuTLS-3.6.3. Therefore versions of gnuTLS shipped with Red Hat Enterprise Linux 5, 6 and 7 are not affected by this flaw. This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:1998 https://access.redhat.com/errata/RHSA-2020:1998 This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2020-11501 External References: https://www.redhat.com/en/blog/understanding-dtls-all-zero-clienthellorandom-vulnerability RHEL UBI8 images show the following: $ docker pull registry.redhat.io/ubi8-minimal:latest && docker run -ti registry.redhat.io/ubi8-minimal:latest bash -c "rpm -aq | grep tls" latest: Pulling from ubi8-minimal Digest: sha256:5a857c1d77b1dbb72f11e6d95ca01c3dab947f0c95ca53a6a28eabf4f3f9463a Status: Image is up to date for registry.redhat.io/ubi8-minimal:latest registry.redhat.io/ubi8-minimal:latest gnutls-3.6.8-11.el8_2.x86_64 Has this fix been ported to the gnutls-3.6.8-11.el8_2.x86_64 package that is shipped with UBI8? |