CVE-2025-2173 - libzvbi conv.c vbi_strndup_iconv_ucs2 uninitialized pointer

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MEDIUM

libzvbi conv.c vbi_strndup_iconv_ucs2 uninitialized pointer

Published Mar 11, 2025

6.9

MEDIUM

CVSS 4.0

EPSS 0.61%

Description

A vulnerability was found in libzvbi up to 0.2.43. It has been classified as problematic. Affected is the function vbi_strndup_iconv_ucs2 of the file src/conv.c. The manipulation of the argument src_length leads to uninitialized pointer. It is possible to launch the attack 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 8def647eea27f7fd7ad33ff79c2d6d3e39948dce. It is recommended to upgrade the affected component. The code maintainer was informed beforehand about the issues. She reacted very fast and highly professional.

Affected products

Vendor n/a Product Libzvbi Default
n/a
- Version
  0.2.0
  Status
  affected
  Constraints
  -
- Version
  0.2.1
  Status
  affected
  Constraints
  -
- Version
  0.2.10
  Status
  affected
  Constraints
  -
- Version
  0.2.11
  Status
  affected
  Constraints
  -
- Version
  0.2.12
  Status
  affected
  Constraints
  -
- Version
  0.2.13
  Status
  affected
  Constraints
  -
- Version
  0.2.14
  Status
  affected
  Constraints
  -
- Version
  0.2.15
  Status
  affected
  Constraints
  -
- Version
  0.2.16
  Status
  affected
  Constraints
  -
- Version
  0.2.17
  Status
  affected
  Constraints
  -
- Version
  0.2.18
  Status
  affected
  Constraints
  -
- Version
  0.2.19
  Status
  affected
  Constraints
  -
- Version
  0.2.2
  Status
  affected
  Constraints
  -
- Version
  0.2.20
  Status
  affected
  Constraints
  -
- Version
  0.2.21
  Status
  affected
  Constraints
  -
- Version
  0.2.22
  Status
  affected
  Constraints
  -
- Version
  0.2.23
  Status
  affected
  Constraints
  -
- Version
  0.2.24
  Status
  affected
  Constraints
  -
- Version
  0.2.25
  Status
  affected
  Constraints
  -
- Version
  0.2.26
  Status
  affected
  Constraints
  -
- Version
  0.2.27
  Status
  affected
  Constraints
  -
- Version
  0.2.28
  Status
  affected
  Constraints
  -
- Version
  0.2.29
  Status
  affected
  Constraints
  -
- Version
  0.2.3
  Status
  affected
  Constraints
  -
- Version
  0.2.30
  Status
  affected
  Constraints
  -
- Version
  0.2.31
  Status
  affected
  Constraints
  -
- Version
  0.2.32
  Status
  affected
  Constraints
  -
- Version
  0.2.33
  Status
  affected
  Constraints
  -
- Version
  0.2.34
  Status
  affected
  Constraints
  -
- Version
  0.2.35
  Status
  affected
  Constraints
  -
- Version
  0.2.36
  Status
  affected
  Constraints
  -
- Version
  0.2.37
  Status
  affected
  Constraints
  -
- Version
  0.2.38
  Status
  affected
  Constraints
  -
- Version
  0.2.39
  Status
  affected
  Constraints
  -
- Version
  0.2.4
  Status
  affected
  Constraints
  -
- Version
  0.2.40
  Status
  affected
  Constraints
  -
- Version
  0.2.41
  Status
  affected
  Constraints
  -
- Version
  0.2.42
  Status
  affected
  Constraints
  -
- Version
  0.2.43
  Status
  affected
  Constraints
  -
- Version
  0.2.5
  Status
  affected
  Constraints
  -
- Version
  0.2.6
  Status
  affected
  Constraints
  -
- Version
  0.2.7
  Status
  affected
  Constraints
  -
- Version
  0.2.8
  Status
  affected
  Constraints
  -
- Version
  0.2.9
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

n/a

Libzvbi

n/a

Version	Status	Constraints
0.2.0	affected	-
0.2.1	affected	-
0.2.10	affected	-
0.2.11	affected	-
0.2.12	affected	-
0.2.13	affected	-
0.2.14	affected	-
0.2.15	affected	-
0.2.16	affected	-
0.2.17	affected	-
0.2.18	affected	-
0.2.19	affected	-
0.2.2	affected	-
0.2.20	affected	-
0.2.21	affected	-
0.2.22	affected	-
0.2.23	affected	-
0.2.24	affected	-
0.2.25	affected	-
0.2.26	affected	-
0.2.27	affected	-
0.2.28	affected	-
0.2.29	affected	-
0.2.3	affected	-
0.2.30	affected	-
0.2.31	affected	-
0.2.32	affected	-
0.2.33	affected	-
0.2.34	affected	-
0.2.35	affected	-
0.2.36	affected	-
0.2.37	affected	-
0.2.38	affected	-
0.2.39	affected	-
0.2.4	affected	-
0.2.40	affected	-
0.2.41	affected	-
0.2.42	affected	-
0.2.43	affected	-
0.2.5	affected	-
0.2.6	affected	-
0.2.7	affected	-
0.2.8	affected	-
0.2.9	affected	-

Remediation

No remediation recorded yet.

Weaknesses (2)

CWE-824

CWE-908

References (7)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-7526
Advisory
https://github.com/zapping-vbi/zvbi/commit/8def647eea27f7fd7ad33ff79c2d6d3e39948dce
patch
https://github.com/zapping-vbi/zvbi/releases/tag/v0.2.44
patchRelease Notes
https://github.com/zapping-vbi/zvbi/security/advisories/GHSA-g7cg-7gw9-v8cf
relatedPatchVendor Advisory
https://vuldb.com/?ctiid.299202
signaturepermissions-requiredPermissions RequiredVDB Entry
https://vuldb.com/?id.299202
vdb-entrytechnical-descriptionThird Party AdvisoryVDB Entry
https://vuldb.com/?submit.512798
third-party-advisoryThird Party AdvisoryVDB Entry

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-7526		Advisory
https://github.com/zapping-vbi/zvbi/commit/8def647eea27f7fd7ad33ff79c2d6d3e39948dce		patch
https://github.com/zapping-vbi/zvbi/releases/tag/v0.2.44		patchRelease Notes
https://github.com/zapping-vbi/zvbi/security/advisories/GHSA-g7cg-7gw9-v8cf		relatedPatchVendor Advisory
https://vuldb.com/?ctiid.299202		signaturepermissions-requiredPermissions RequiredVDB Entry
https://vuldb.com/?id.299202		vdb-entrytechnical-descriptionThird Party AdvisoryVDB Entry
https://vuldb.com/?submit.512798		third-party-advisoryThird Party AdvisoryVDB Entry