CVE-2024-9143

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.

• CWE-125
• CWE-787

• https://github.com/openssl/openssl/commit/72ae83ad214d2eef262461365a1975707f862712Patch
• https://github.com/openssl/openssl/commit/bc7e04d7c8d509fb78fc0e285aa948fb0da04700Patch
• https://github.com/openssl/openssl/commit/c0d3e4d32d2805f49bec30547f225bc4d092e1f4Patch
• https://github.com/openssl/openssl/commit/fdf6723362ca51bd883295efe206cb5b1cfa5154Patch
• https://github.openssl.org/openssl/extended-releases/commit/8efc0cbaa8ebba8e116f7b81a876a4123594d86aPermissions Required
• https://github.openssl.org/openssl/extended-releases/commit/9d576994cec2b7aa37a91740ea7e680810957e41Permissions Required
• https://openssl-library.org/news/secadv/20241016.txtVendor Advisory
• https://www.openwall.com/lists/oss-security/2024/10/16/1Mailing List, Third Party Advisory
• https://www.openwall.com/lists/oss-security/2024/10/23/1Mailing List, Third Party Advisory
• https://www.openwall.com/lists/oss-security/2024/10/24/1Mailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2024/10/msg00033.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2024/11/msg00000.htmlMailing List, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20241101-0001/Third Party Advisory
• https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlThird Party Advisory
• https://cert-portal.siemens.com/productcert/html/ssa-277137.htmlThird Party Advisory
• https://cert-portal.siemens.com/productcert/html/ssa-398330.htmlThird Party Advisory
• https://cert-portal.siemens.com/productcert/html/ssa-769027.htmlThird Party Advisory

Published

Oct 16, 2024

Last Modified

Nov 9, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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