9.8
CRITICAL
CVE-2023-35784
OpenBSD LibreSSL SSL Double Free
Description

A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3. NOTE: OpenSSL is not affected.

INFO

Published Date :

June 16, 2023, 8:15 p.m.

Last Modified :

Nov. 6, 2023, 10:15 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2023-35784 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2023-35784 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Openbsd openbsd
2 Openbsd libressl
: Total Affected Vendor : 1 | Products : 2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-35784.

URL Resource
https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.3-relnotes.txt Release Notes
https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.7.3-relnotes.txt Release Notes
https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/026_ssl.patch.sig Patch
https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/004_ssl.patch.sig Patch
https://github.com/libressl/openbsd/commit/e42d8f4b21a8a498e2eabbffe4c7b7d4ef7cec54

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
chnzzh/OpenSSL-CVE-lib

None

Updated: 2 months ago
5 stars 0 fork 0 watcher
Born at : Feb. 23, 2023, 5:42 a.m. This repo has been linked 455 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-35784 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-35784 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 06, 2023

    Action Type Old Value New Value
    Removed Reference https://github.com/libressl/openbsd/commit/1d6680b3682f8caba78c627dee60c76da6e20dd7 [Patch]
    Removed Reference https://github.com/libressl/openbsd/commit/96094ca8757b95298f49d65c813f303bd514b27b [Patch]
    Added Reference https://github.com/libressl/openbsd/commit/e42d8f4b21a8a498e2eabbffe4c7b7d4ef7cec54 [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 26, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.3-relnotes.txt No Types Assigned https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.3-relnotes.txt Release Notes
    Changed Reference Type https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.7.3-relnotes.txt No Types Assigned https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.7.3-relnotes.txt Release Notes
    Changed Reference Type https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/026_ssl.patch.sig No Types Assigned https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/026_ssl.patch.sig Patch
    Changed Reference Type https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/004_ssl.patch.sig No Types Assigned https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/004_ssl.patch.sig Patch
    Changed Reference Type https://github.com/libressl/openbsd/commit/1d6680b3682f8caba78c627dee60c76da6e20dd7 No Types Assigned https://github.com/libressl/openbsd/commit/1d6680b3682f8caba78c627dee60c76da6e20dd7 Patch
    Changed Reference Type https://github.com/libressl/openbsd/commit/96094ca8757b95298f49d65c813f303bd514b27b No Types Assigned https://github.com/libressl/openbsd/commit/96094ca8757b95298f49d65c813f303bd514b27b Patch
    Added CWE NIST CWE-415
    Added CWE NIST CWE-416
    Added CPE Configuration OR *cpe:2.3:a:openbsd:libressl:*:*:*:*:*:*:*:* versions up to (excluding) 3.6.3 *cpe:2.3:a:openbsd:libressl:*:*:*:*:*:*:*:* versions from (including) 3.7.0 up to (excluding) 3.7.3 *cpe:2.3:o:openbsd:openbsd:7.2:*:*:*:*:*:*:* *cpe:2.3:o:openbsd:openbsd:7.3:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-35784 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-35784 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.26 }} 0.03%

score

0.65594

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
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: