Products
OpenSSL
Source
openssl-security@openssl.org
Tags
CVE-2024-6119 details
Last Modified : Sept. 3, 2024, 9:35 p.m.
Description
Issue summary: Applications performing certificate name checks (e.g., TLS clients checking server certificates) may attempt to read an invalid memory address resulting in abnormal termination of the application process. Impact summary: Abnormal termination of an application can a cause a denial of service. Applications performing certificate name checks (e.g., TLS clients checking server certificates) may attempt to read an invalid memory address when comparing the expected name with an `otherName` subject alternative name of an X.509 certificate. This may result in an exception that terminates the application program. Note that basic certificate chain validation (signatures, dates, ...) is not affected, the denial of service can occur only when the application also specifies an expected DNS name, Email address or IP address. TLS servers rarely solicit client certificates, and even when they do, they generally don't perform a name check against a reference identifier (expected identity), but rather extract the presented identity after checking the certificate chain. So TLS servers are generally not affected and the severity of the issue is Moderate. The FIPS modules in 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.
CVSS Score
| 1 | 2 | 3 | 4 | 5 | 6 | 7.5 | 8 | 9 | 10 |
|---|
Weakness
| Weakness | Name | Description |
|---|---|---|
| CWE-843 | Access of Resource Using Incompatible Type ('Type Confusion') | The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. |
CVSS Data
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Base Score
7.5
Exploitability Score
3.9
Impact Score
3.6
Base Severity
HIGH
Vector String : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
References
| URL | Source |
|---|---|
| https://github.com/openssl/openssl/commit/05f360d9e849a1b277db628f1f13083a7f8dd04f | openssl-security@openssl.org |
| https://github.com/openssl/openssl/commit/06d1dc3fa96a2ba5a3e22735a033012aadc9f0d6 | openssl-security@openssl.org |
| https://github.com/openssl/openssl/commit/621f3729831b05ee828a3203eddb621d014ff2b2 | openssl-security@openssl.org |
| https://github.com/openssl/openssl/commit/7dfcee2cd2a63b2c64b9b4b0850be64cb695b0a0 | openssl-security@openssl.org |
| https://openssl-library.org/news/secadv/20240903.txt | openssl-security@openssl.org |