CVE-2024-9143
Low-level invalid GF(2^m) parameters lead to OOB memory access
- Published
- Updated
- Reserved
- Assigned by
- openssl
Description
Issue summary: Use of the low-level GF(2^m) elliptic curve APIs with untrusted explicit values for the field polynomial can lead to out-of-bounds memory reads or writes. Impact summary: Out of bound memory writes can lead to an application crash or even a possibility of a remote code execution, however, in all the protocols involving Elliptic Curve Cryptography that we're aware of, either only "named curves" are supported, or, if explicit curve parameters are supported, they specify an X9.62 encoding of binary (GF(2^m)) curves that can't represent problematic input values. Thus the likelihood of existence of a vulnerable application is low. In particular, the X9.62 encoding is used for ECC keys in X.509 certificates, so problematic inputs cannot occur in the context of processing X.509 certificates. Any problematic use-cases would have to be using an "exotic" curve encoding. The affected APIs include: EC_GROUP_new_curve_GF2m(), EC_GROUP_new_from_params(), and various supporting BN_GF2m_*() functions. Applications working with "exotic" explicit binary (GF(2^m)) curve parameters, that make it possible to represent invalid field polynomials with a zero constant term, via the above or similar APIs, may terminate abruptly as a result of reading or writing outside of array bounds. Remote code execution cannot easily be ruled out. The FIPS modules in 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.
Timeline
ID reserved
By openssl
- 22 days later
· 22 days later
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Undergoing Analysis | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 9.0% · top 4.7% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Weakness
Affected products
References (17)
- OpenSSL Advisory (opens in a new tab)vendor-advisory
- 3.3.3 git commit (opens in a new tab)patch
- 3.2.4 git commit (opens in a new tab)patch
- 3.1.8 git commit (opens in a new tab)patch
- 3.0.16 git commit (opens in a new tab)patch
- 1.1.1zb git commit (opens in a new tab)patch
- 1.0.2zl git commit (opens in a new tab)patch
- http://www.openwall.com/lists/oss-security/2024/10/16/1 (opens in a new tab)
- http://www.openwall.com/lists/oss-security/2024/10/23/1 (opens in a new tab)
- http://www.openwall.com/lists/oss-security/2024/10/24/1 (opens in a new tab)
- https://security.netapp.com/advisory/ntap-20241101-0001/ (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2024/11/msg00000.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2024/10/msg00033.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-769027.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-277137.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2024-9143)Record last updated .