onyx --cves cve-2021-3450
CVE-2021-3450
- score
- <0.1
- cvss
- 7.4
- epss
- 18.3%
- published
- 2021-03-25
- kev added
- —
- first seen
OpenSSL 1.1.1h-1.1.1j contains a certificate validation bypass caused by an implementation error in the strict check for certificates with explicitly encoded elliptic curve parameters, letting attackers bypass CA certificate validation, exploit requires explicit setting of X509_V_FLAG_X509_STRICT without proper purpose configuration.
Timeline
How this CVE moved toward exploitation. Chart: last 30 days — trend score, EPSS, community mentions per day; hover the event lane.
- Published
- Tracked by Onyx
- Public PoC
Exploit availability
Public PoC flagged by vulnx; no direct exploit link among the citations.
Weaknesses
References 24
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013
- https://security.netapp.com/advisory/ntap-20210326-0006/
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://www.openssl.org/news/secadv/20210325.txt
- http://www.openwall.com/lists/oss-security/2021/03/27/2
- http://www.openwall.com/lists/oss-security/2021/03/28/3
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://security.gentoo.org/glsa/202103-03
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2a40b7bc7b94dd7de897a74571e7024f0cf0d63b
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845
- https://kc.mcafee.com/corporate/index?page=content&id=SB10356
- https://mta.openssl.org/pipermail/openssl-announce/2021-March/000198.html
- https://security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.tenable.com/security/tns-2021-08
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CCBFLLVQVILIVGZMBJL3IXZGKWQISYNP/
- http://www.openwall.com/lists/oss-security/2021/03/27/1
- http://www.openwall.com/lists/oss-security/2021/03/28/4
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.tenable.com/security/tns-2021-05
- https://www.tenable.com/security/tns-2021-09