CVE-2024-43167
Unbound NULL Pointer Dereference Denial of Service
Description
DISPUTE NOTE: this issue does not pose a security risk as it (according to analysis by the original software developer, NLnet Labs) falls within the expected functionality and security controls of the application. Red Hat has made a claim that there is a security risk within Red Hat products. NLnet Labs has no further information about the claim, and suggests that affected Red Hat customers refer to available Red Hat documentation or support channels. ORIGINAL DESCRIPTION: A NULL pointer dereference flaw was found in the ub_ctx_set_fwd function in Unbound. This issue could allow an attacker who can invoke specific sequences of API calls to cause a segmentation fault. When certain API functions such as ub_ctx_set_fwd and ub_ctx_resolvconf are called in a particular order, the program attempts to read from a NULL pointer, leading to a crash. This issue can result in a denial of service by causing the application to terminate unexpectedly.
INFO
Published Date :
Aug. 12, 2024, 1:38 p.m.
Last Modified :
Nov. 21, 2024, 9:35 a.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2024-43167
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.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | LOW | [email protected] |
Solution
- Update the affected packages.
- If necessary, upgrade the libunbound-dev packages.
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-2024-43167.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-43167 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-2024-43167
weaknesses.
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-43167 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-43167 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2024/08/16/6 -
CVE Source Update by [email protected]
Oct. 21, 2024
Action Type Old Value New Value Changed Source Red Hat, Inc. NLnet Labs -
CVE Modified by [email protected]
Oct. 21, 2024
Action Type Old Value New Value Changed Description A NULL pointer dereference flaw was found in the ub_ctx_set_fwd function in Unbound. This issue could allow an attacker who can invoke specific sequences of API calls to cause a segmentation fault. When certain API functions such as ub_ctx_set_fwd and ub_ctx_resolvconf are called in a particular order, the program attempts to read from a NULL pointer, leading to a crash. This issue can result in a denial of service by causing the application to terminate unexpectedly. DISPUTE NOTE: this issue does not pose a security risk as it (according to analysis by the original software developer, NLnet Labs) falls within the expected functionality and security controls of the application. Red Hat has made a claim that there is a security risk within Red Hat products. NLnet Labs has no further information about the claim, and suggests that affected Red Hat customers refer to available Red Hat documentation or support channels. ORIGINAL DESCRIPTION: A NULL pointer dereference flaw was found in the ub_ctx_set_fwd function in Unbound. This issue could allow an attacker who can invoke specific sequences of API calls to cause a segmentation fault. When certain API functions such as ub_ctx_set_fwd and ub_ctx_resolvconf are called in a particular order, the program attempts to read from a NULL pointer, leading to a crash. This issue can result in a denial of service by causing the application to terminate unexpectedly. Added Reference NLnet Labs https://access.redhat.com/security/cve/CVE-2024-43167 [No types assigned] Added Reference NLnet Labs https://bugzilla.redhat.com/show_bug.cgi?id=2303456 [No types assigned] Added Reference NLnet Labs https://github.com/NLnetLabs/unbound/issues/1072 [No types assigned] Added Reference NLnet Labs https://github.com/NLnetLabs/unbound/pull/1073/files [No types assigned] Removed Reference Red Hat, Inc. https://access.redhat.com/security/cve/CVE-2024-43167 Removed Reference Red Hat, Inc. https://bugzilla.redhat.com/show_bug.cgi?id=2303456 Removed Reference Red Hat, Inc. https://github.com/NLnetLabs/unbound/issues/1072 Removed Reference Red Hat, Inc. https://github.com/NLnetLabs/unbound/pull/1073/files Added CWE NLnet Labs CWE-476 Removed CWE Red Hat, Inc. CWE-476 Removed CVSS V3.1 Red Hat, Inc. AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L Added CVSS V3.1 NLnet Labs AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L -
CVE Received by [email protected]
Aug. 12, 2024
Action Type Old Value New Value Added Description A NULL pointer dereference flaw was found in the ub_ctx_set_fwd function in Unbound. This issue could allow an attacker who can invoke specific sequences of API calls to cause a segmentation fault. When certain API functions such as ub_ctx_set_fwd and ub_ctx_resolvconf are called in a particular order, the program attempts to read from a NULL pointer, leading to a crash. This issue can result in a denial of service by causing the application to terminate unexpectedly. Added Reference Red Hat, Inc. https://access.redhat.com/security/cve/CVE-2024-43167 [No types assigned] Added Reference Red Hat, Inc. https://bugzilla.redhat.com/show_bug.cgi?id=2303456 [No types assigned] Added Reference Red Hat, Inc. https://github.com/NLnetLabs/unbound/issues/1072 [No types assigned] Added Reference Red Hat, Inc. https://github.com/NLnetLabs/unbound/pull/1073/files [No types assigned] Added CWE Red Hat, Inc. CWE-476 Added CVSS V3.1 Red Hat, Inc. AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L