Timing side-channel in ECDSA signature computation
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 12 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.
Summary
Issue summary: A timing side-channel which could potentially allow recovering the private key exists in the ECDSA signature computation. Impact summary: A timing side-channel in ECDSA signature computations could allow recovering the private key by an attacker. However, measuring the timing would require either local access to the signing application or a very fast network connection with low latency. There is a timing signal of around 300 nanoseconds when the top word of the inverted ECDSA nonce value is zero. This can happen with significant probability only for some of the supported elliptic curves. In particular the NIST P-521 curve is affected. To be able to measure this leak, the attacker process must either be located in the same physical computer or must have a very fast network connection with low latency. For that reason the severity of this vulnerability is Low. The FIPS modules in 3.4, 3.3, 3.2, 3.1 and 3.0 are affected by this issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OpenSSL | OpenSSL | 3.4.0 to before 3.4.1; 3.3.0 to before 3.3.3; 3.2.0 to before 3.2.4; 3.1.0 to before 3.1.8; 3.0.0 to before 3.0.16; 1.1.1 to before 1.1.1zb; 1.0.2 to before 1.0.2zl | 3.4.1, 3.3.3, 3.2.4, 3.1.8, 3.0.16, 1.1.1zb, 1.0.2zl | Patch available | CNA |
- OpenSSL VendorOpenSSL Affected 3.4.0 to before 3.4.1; 3.3.0 to before 3.3.3; 3.2.0 to before 3.2.4; 3.1.0 to before 3.1.8; 3.0.0 to before 3.0.16; 1.1.1 to before 1.1.1zb; 1.0.2 to before 1.0.2zl Fixed in 3.4.1, 3.3.3, 3.2.4, 3.1.8, 3.0.16, 1.1.1zb, 1.0.2zl Patch available CNA
Remediation
- Fix · CNA OpenSSL (OpenSSL) Fixed in 3.4.1, 3.3.3, 3.2.4, 3.1.8, 3.0.16, 1.1.1zb, 1.0.2zl
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Logging Subsystem for Red Hat OpenShift | Affected | No fix yet: Fix deferred |
| Red Hat 3scale API Management Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Core Services | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | — |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat Trusted Artifact Signer | Affected | No fix yet: Fix deferred |
| Red Hat Trusted Profile Analyzer | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat OpenShift AI (RHOAI)
Timeline
- 2026-10-02 Threatist record created from CVE-2024-13176
- 2026-10-03 Alias added: GHSA-r9fv-h47r-823f
- 2026-10-22 Affected versions changed · Red Hat
- 2026-10-22 CVSS score added · Red Hat
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score changed · CISA ADP
- 2026-11-07 EPSS moved to the 50th–90th percentile
References
More OpenSSL vulnerabilities
- TI-2022-01915 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
- TI-2021-02645 SM2 Decryption Buffer Overflow CVSS 3.1CRITICAL 9.8
- TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
- TI-2022-01176 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
- TI-2014-00154 The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly… KEVCVSS 3.1HIGH 7.5
- TI-2025-14107 Stack buffer overflow in CMS (Auth)EnvelopedData parsing CVSS 3.1HIGH 8.8
Sources
- CVE-2024-13176 · CVE Program
- CVE-2024-13176 · NVD
- FIRST EPSS
- GHSA-r9fv-h47r-823f · GitHub Advisory Database · CC BY 4.0
- CVE-2024-13176 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences