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Security Advisories: GSA_kwCzR0hTQS12NXc2LXdjbTgtam00cc4AAxfq
openssl-src contains Double free after calling `PEM_read_bio_ex`
The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and decodes the "name" (e.g. "CERTIFICATE"), any header data and the payload data. If the function succeeds then the "name_out", "header" and "data" arguments are populated with pointers to buffers containing the relevant decoded data. The caller is responsible for freeing those buffers. It is possible to construct a PEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex() will return a failure code but will populate the header argument with a pointer to a buffer that has already been freed. If the caller also frees this buffer then a double free will occur. This will most likely lead to a crash. This could be exploited by an attacker who has the ability to supply malicious PEM files for parsing to achieve a denial of service attack.
The functions PEM_read_bio() and PEM_read() are simple wrappers around PEM_read_bio_ex() and therefore these functions are also directly affected.
These functions are also called indirectly by a number of other OpenSSL functions including PEM_X509_INFO_read_bio_ex() and
SSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal uses of these functions are not vulnerable because the caller does not free the header argument if PEM_read_bio_ex() returns a failure code. These locations include the PEM_read_bio_TYPE() functions as well as the decoders introduced in OpenSSL 3.0.
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS12NXc2LXdjbTgtam00cc4AAxfq
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 1 year ago
Updated: 3 months ago
CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Identifiers: GHSA-v5w6-wcm8-jm4q, CVE-2022-4450
References:
- https://nvd.nist.gov/vuln/detail/CVE-2022-4450
- https://rustsec.org/advisories/RUSTSEC-2023-0010.html
- https://www.openssl.org/news/secadv/20230207.txt
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=63bcf189be73a9cc1264059bed6f57974be74a83
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b
- https://security.gentoo.org/glsa/202402-08
- https://github.com/advisories/GHSA-v5w6-wcm8-jm4q
Affected Packages
cargo:openssl-src
Dependent packages: 9Dependent repositories: 3,600
Downloads: 18,993,906 total
Affected Version Ranges: >= 300.0.0, < 300.0.12, < 111.25.0
Fixed in: 300.0.12, 111.25.0
All affected versions: 110.0.0, 110.0.0, 110.0.1, 110.0.2, 110.0.3, 110.0.4, 110.0.5, 110.0.6, 110.0.7, 111.0.0, 111.0.1, 111.1.0, 111.1.1, 111.2.1, 111.3.0, 111.4.0, 111.5.0, 111.6.0, 111.6.1, 111.7.0, 111.8.0, 111.8.1, 111.9.0, 111.10.0, 111.10.1, 111.10.2, 111.11.0, 111.12.0, 111.13.0, 111.14.0, 111.15.0, 111.16.0, 111.17.0, 111.18.0, 111.19.0, 111.20.0, 111.21.0, 111.22.0, 111.23.0, 111.24.0, 300.0.0, 300.0.1, 300.0.2, 300.0.3, 300.0.4, 300.0.5, 300.0.6, 300.0.7, 300.0.8, 300.0.9, 300.0.10, 300.0.11
All unaffected versions: 111.25.0, 111.25.1, 111.25.2, 111.25.3, 111.26.0, 111.27.0, 111.28.0, 111.28.1, 300.0.12, 300.0.13, 300.1.0, 300.1.1, 300.1.2, 300.1.3, 300.1.4, 300.1.5, 300.1.6, 300.2.0, 300.2.1, 300.2.2, 300.2.3