CVE-2022-2509 - Double Free

Severity

75%

Complexity

39%

Confidentiality

60%

A vulnerability found in gnutls. This security flaw happens because of a double free error occurs during verification of pkcs7 signatures in gnutls_pkcs7_verify function.

CVSS 3.1 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Demo Examples

Double Free

CWE-415

Double Free

CWE-415

While contrived, this code should be exploitable on Linux distributions which do not ship with heap-chunk check summing turned on.


               
}
free(buf1R2);

Overview

First reported 2 years ago

2022-08-01 14:15:00

Last updated 2 years ago

2022-08-19 12:10:00

Affected Software

GNU GnuTLS

Red Hat Enterprise Linux 8.0

8.0

References

https://access.redhat.com/security/cve/CVE-2022-2509

https://lists.gnupg.org/pipermail/gnutls-help/2022-July/004746.html

https://access.redhat.com/security/cve/CVE-2022-2509

Third Party Advisory

https://lists.gnupg.org/pipermail/gnutls-help/2022-July/004746.html

Mailing List, Release Notes, Vendor Advisory

DSA-5203

[debian-lts-announce] 20220812 [SECURITY] [DLA 3070-1] gnutls28 security update

FEDORA-2022-5470992bfc

DSA-5203

Third Party Advisory

[debian-lts-announce] 20220812 [SECURITY] [DLA 3070-1] gnutls28 security update

Mailing List, Third Party Advisory

FEDORA-2022-5470992bfc

Mailing List, Third Party Advisory

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