Low-level invalid GF(2^m) parameters lead to OOB memory access

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Summary

CVECVE-2024-9143
StatePUBLISHED
Assigneropenssl
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-10-16 17:15:18 UTC
Updated2026-05-12 12:17:22 UTC
DescriptionIssue 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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from ADP

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.008830000 probability, percentile 0.755520000 (date 2026-05-12)

Problem Types: CWE-125 | CWE-787 | CWE-125 CWE-125 Out-of-bounds Read | CWE-787 CWE-787 Out-of-bounds Write

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OpenSSL OpenSSL affected 3.3.0 3.3.3 semver Not specified
CNA OpenSSL OpenSSL affected 3.2.0 3.2.4 semver Not specified
CNA OpenSSL OpenSSL affected 3.1.0 3.1.8 semver Not specified
CNA OpenSSL OpenSSL affected 3.0.0 3.0.16 semver Not specified
CNA OpenSSL OpenSSL affected 1.1.1 1.1.1zb custom Not specified
CNA OpenSSL OpenSSL affected 1.0.2 1.0.2zl custom Not specified
ADP Siemens SIDIS Prime affected V4.0.700 custom Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
github.com/openssl/openssl/commit/72ae83ad214d2eef262461365a1975707f862712 [email protected] github.com
github.openssl.org/openssl/extended-releases/commit/8efc0cbaa8ebba8e116f7b81a876... [email protected] github.openssl.org
www.openwall.com/lists/oss-security/2024/10/23/1 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
www.openwall.com/lists/oss-security/2024/10/24/1 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
cert-portal.siemens.com/productcert/html/ssa-769027.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
github.openssl.org/openssl/extended-releases/commit/9d576994cec2b7aa37a91740ea7e... [email protected] github.openssl.org
cert-portal.siemens.com/productcert/html/ssa-277137.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
www.openwall.com/lists/oss-security/2024/10/16/1 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
github.com/openssl/openssl/commit/c0d3e4d32d2805f49bec30547f225bc4d092e1f4 [email protected] github.com
github.com/openssl/openssl/commit/bc7e04d7c8d509fb78fc0e285aa948fb0da04700 [email protected] github.com
lists.debian.org/debian-lts-announce/2024/11/msg00000.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
lists.debian.org/debian-lts-announce/2024/10/msg00033.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
openssl-library.org/news/secadv/20241016.txt [email protected] openssl-library.org
security.netapp.com/advisory/ntap-20241101-0001 af854a3a-2127-422b-91ae-364da2661108 security.netapp.com
github.com/openssl/openssl/commit/fdf6723362ca51bd883295efe206cb5b1cfa5154 [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Google OSS-Fuzz-Gen (en)

CNA: Viktor Dukhovni (en)

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