CVE-2025-6499

A vulnerability classified as problematic was found in vstakhov libucl up to 0.9.2. Affected by this vulnerability is the function ucl_parse_multiline_string of the file src/ucl_parser.c. The manipulation leads to heap-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.

CVSS v3 3.3 LOW
CVSS v2.0 1.7 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

1.7^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 3.1 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/user-attachments/files/19825399/libucl_crash.txt	Exploit
https://github.com/vstakhov/libucl/issues/319	Exploit Issue Tracking
https://vuldb.com/?ctiid.313615	Permissions Required VDB Entry
https://vuldb.com/?id.313615	Third Party Advisory VDB Entry
https://vuldb.com/?submit.601011	Third Party Advisory VDB Entry
https://github.com/vstakhov/libucl/issues/319	Exploit Issue Tracking

Configurations

Configuration 1 (hide)

cpe:2.3:a:vstakhov:libucl:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-06-23 03:15

Updated : 2025-09-18 13:06

NVD link : CVE-2025-6499

Mitre link : CVE-2025-6499

CVE.ORG link : CVE-2025-6499

JSON object : View

Products Affected

vstakhov

libucl

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-122

Heap-based Buffer Overflow

CWE-787

Out-of-bounds Write

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Affected by this vulnerability is the function ucl_parse_multiline_string of the file src/ucl_parser.c. The manipulation leads to heap-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used."}, {"lang": "es", "value": "Se encontr\u00f3 una vulnerabilidad clasificada como problem\u00e1tica en vstakhov libucl hasta la versi\u00f3n 0.9.2. Esta vulnerabilidad afecta a la funci\u00f3n ucl_parse_multiline_string del archivo src/ucl_parser.c. La manipulaci\u00f3n provoca un desbordamiento del b\u00fafer en el mont\u00f3n. El ataque debe abordarse localmente. Se ha hecho p\u00fablico el exploit y puede que sea utilizado."}], "lastModified": "2025-09-18T13:06:38.160", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:vstakhov:libucl:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3CC62C0B-B5F4-4924-A2BF-CD5D4C02BCA4", "versionEndIncluding": "0.9.2"}], "operator": "OR"}]}], "sourceIdentifier": "[email protected]"}