VulnerabilityModified

CVE-2022-3602

Note that this occurs after certificate chain signature verification and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer.

HIGH 7.5EPSS 90.8%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 90.8%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address to overflow four attacker-controlled bytes on the stack. This buffer overflow could result in a crash (causing a denial of service) or potentially remote code execution. Many platforms implement stack overflow protections which would mitigate against the risk of remote code execution. The risk may be further mitigated based on stack layout for any given platform/compiler. Pre-announcements of CVE-2022-3602 described this issue as CRITICAL. Further analysis based on some of the mitigating factors described above have led this to be downgraded to HIGH. Users are still encouraged to upgrade to a new version as soon as possible. In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects. Fixed in OpenSSL 3.0.7 (Affected 3.0.0,3.0.1,3.0.2,3.0.3,3.0.4,3.0.5,3.0.6).

CVSS 3.1: 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 90.77% probability · 100th percentile
CISA KEV: Not listed
Weakness: CWE-787
Affected: openssl/openssl · fedoraproject/fedora · netapp/clustered data ontap · nodejs/node.js
Source: openssl-security@openssl.org

References

http://packetstormsecurity.com/files/169687/OpenSSL-Security-Advisory-20221101.htmlThird Party Advisory, VDB Entry
http://www.openwall.com/lists/oss-security/2022/11/01/15Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/01/16Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/01/17Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/01/18Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/01/19Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/01/20Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/01/21Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/01/24Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/02/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/02/10Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/02/11Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/02/12Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/02/13Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/02/14Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/02/15Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/02/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/02/3Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/02/5Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/02/6Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/02/7Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/02/9Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/03/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/03/10Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/03/11Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/03/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/03/3Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/03/5Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/03/6Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/11/03/7Mailing List, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.