CVE-2024-28834: gnutls · Weak Cryptography
Affects gnutlsSource GCVE Database
Not known to be exploited · CVSS 5.3 Medium.
Data as of 8 Nov 2026, 04:04 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 5.3 |
|---|
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 21 Mar 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| gnutls | Affected
| Fixed in– |
AI-suggested
Red Hat has released an updated GnuTLS package that fixes this timing side-channel vulnerability. Users of affected Red Hat Enterprise Linux 8 versions should apply the security update RHSA-2024:1784 promptly. Ensure all prior relevant errata are applied before updating. No additional mitigation steps are required beyond applying the official patch.
Description
CVE-2024-28834 is a cryptographic vulnerability in GnuTLS related to the Minerva attack, which exploits deterministic behavior causing a timing side-channel leak. This occurs specifically when the GNUTLS_PRIVKEY_FLAG_REPRODUCIBLE flag is used, leading to a detectable step change in nonce size from 513 to 512 bits. The vulnerability can leak sensitive cryptographic information through timing analysis.
References
- access.redhat.com/errata/RHSA-2024:1784 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:1879 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:1997 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:2044 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:2570 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:2889 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2024-28834 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2269228 (opens in a new tab)
- lists.gnupg.org/pipermail/gnutls-help/2024-March/004845.html (opens in a new tab)
- minerva.crocs.fi.muni.cz (opens in a new tab)
- openwall.com/lists/oss-security/2024/03/22/1 (opens in a new tab)
- openwall.com/lists/oss-security/2024/03/22/2 (opens in a new tab)
- people.redhat.com/~hkario/marvin/ (opens in a new tab)
- security.netapp.com/advisory/ntap-20240524-0004/ (opens in a new tab)
- lists.debian.org/debian-lts-announce/2024/09/msg00019.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-398330.html (opens in a new tab)