CVE-2023-47235

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Last Modified: UTC

ModerateModerate ImpactWhat does this mean?

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Description

An issue was found in FRRouting FRR, where a crash may occur when processing a malformed BGP UPDATE message with an EOR.

An issue was found in FRRouting FRR, where a crash may occur when processing a malformed BGP UPDATE message with an EOR.

Statement

A moderate severity issue has been identified in FRRouting FRR, where a crash may occur when processing a malformed BGP UPDATE message with an EOR. It's important to note that Red Hat OpenStack Platform (RHOSP) is not directly affected, as it utilises the version from the underlying Red Hat Enterprise Linux and is marked as Not Affected, with no changes required by the OpenStack engineering team. However, system administrators of OpenStack deployments are advised to apply updates once available in RHEL to mitigate potential risks. Additionally, this flaw is discovered through fuzzing, where, in normal cases, such packets cannot exist.

A moderate severity issue has been identified in FRRouting FRR, where a crash may occur when processing a malformed BGP UPDATE message with an EOR. It's important to note that Red Hat OpenStack Platform (RHOSP) is not directly affected, as it utilises the version from the underlying Red Hat Enterprise Linux and is marked as Not Affected, with no changes required by the OpenStack engineering team. However, system administrators of OpenStack deployments are advised to apply updates once available in RHEL to mitigate potential risks. Additionally, this flaw is discovered through fuzzing, where, in normal cases, such packets cannot exist.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Additional information

  • Bugzilla 2248207: frr: crash from malformed EOR-containing BGP UPDATE message
  • CWE-400: Uncontrolled Resource Consumption
  • FAQ: Frequently asked questions about CVE-2023-47235

Common Vulnerability Scoring System (CVSS) Score Details

Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

CVSS v3 Score Breakdown
Red HatNVD

CVSS v3 Base Score

7.5

7.5

Attack Vector

Network

Network

Attack Complexity

Low

Low

Privileges Required

None

None

User Interaction

None

None

Scope

Unchanged

Unchanged

Confidentiality Impact

None

None

Integrity Impact

None

None

Availability Impact

High

High

CVSS v3 Vector

Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Frequently Asked Questions

Why is Red Hat's CVSS v3 score or Impact different from other vendors?

My product is listed as "Under investigation" or "Affected", when will Red Hat release a fix for this vulnerability?

What can I do if my product is listed as "Will not fix"?

What can I do if my product is listed as "Fix deferred"?

What is a mitigation?

I have a Red Hat product but it is not in the above list, is it affected?

Why is my security scanner reporting my product as vulnerable to this vulnerability even though my product version is fixed or not affected?

My product is listed as "Out of Support Scope". What does this mean?

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