CVE-2025-2177

libzvbi search.c vbi_search_new integer overflow

Severity Score

6.9

*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

A vulnerability classified as critical was found in libzvbi up to 0.2.43. This vulnerability affects the function vbi_search_new of the file src/search.c. The manipulation of the argument pat_len leads to integer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.2.44 is able to address this issue. The patch is identified as ca1672134b3e2962cd392212c73f44f8f4cb489f. It is recommended to upgrade the affected component. The code maintainer was informed beforehand about the issues. She reacted very fast and highly professional.

In libzvbi bis 0.2.43 wurde eine Schwachstelle entdeckt. Sie wurde als kritisch eingestuft. Das betrifft die Funktion vbi_search_new der Datei src/search.c. Mittels Manipulieren des Arguments pat_len mit unbekannten Daten kann eine integer overflow-Schwachstelle ausgenutzt werden. Der Angriff kann über das Netzwerk angegangen werden. Der Exploit steht zur öffentlichen Verfügung. Ein Aktualisieren auf die Version 0.2.44 vermag dieses Problem zu lösen. Der Patch wird als ca1672134b3e2962cd392212c73f44f8f4cb489f bezeichnet. Als bestmögliche Massnahme wird das Einspielen eines Upgrades empfohlen.

This update for zvbi fixes the following issues. Fixed check on src_length to avoid an uninitialized heap read. Fixed integer overflow leading to heap overflow in src/conv.c, src/io-sim.c, src/search.c. Fixed integer overflow in _vbi_strndup_iconv. Fixed integer overflow in function vbi_capture_sim_load_caption in src/io-sim.c. Fixed integer overflow in function vbi_search_new in src/search.c.

*Credits: ninpwn

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

System

Vulnerable | Subsequent

Confidentiality

Low

None

Integrity

Low

None

Availability

Low

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2025-02-28 CVE Published
2025-03-10 CVE Reserved
2025-03-11 CVE Updated
2025-07-11 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-189: Numeric Errors
CWE-190: Integer Overflow or Wraparound

CAPEC

References (5)

URL	Tag	Source
https://github.com/zapping-vbi/zvbi/security/advisories/GHSA-g7cg-7gw9-v8cf	Related
https://vuldb.com/?id.299206	Technical Description
https://vuldb.com/?submit.512803	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/zapping-vbi/zvbi/commit/ca1672134b3e2962cd392212c73f44f8f4cb489f	2025-03-11
https://github.com/zapping-vbi/zvbi/releases/tag/v0.2.44	2025-03-11

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				*		-		Affected