CVE-2025-8733 | THREATINT

Description

A vulnerability was found in GNU Bison up to 3.8.2. It has been rated as problematic. This issue affects the function __obstack_vprintf_internal of the file obprintf.c. The manipulation leads to reachable assertion. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used.

Eine Schwachstelle wurde in GNU Bison bis 3.8.2 ausgemacht. Sie wurde als problematisch eingestuft. Hierbei geht es um die Funktion __obstack_vprintf_internal der Datei obprintf.c. Durch das Beeinflussen mit unbekannten Daten kann eine reachable assertion-Schwachstelle ausgenutzt werden. Umgesetzt werden muss der Angriff lokal. Der Exploit steht zur öffentlichen Verfügung.

Reserved 2025-08-08 | Published 2025-08-08 | Updated 2025-08-08 | Assigner VulDB

MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

LOW: 3.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

1.7AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

Reachable Assertion

Product status

3.8.0

affected

3.8.1

affected

3.8.2

affected

Timeline

2025-08-08:	Advisory disclosed
2025-08-08:	VulDB entry created
2025-08-08:	VulDB entry last update

References

vuldb.com/?id.319229 (VDB-319229 | GNU Bison obprintf.c __obstack_vprintf_internal assertion) vdb-entry technical-description

vuldb.com/?ctiid.319229 (VDB-319229 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.622298 (Submit #622298 | GNU Bison Bison the newest master(2ceaf03-Jul10 in https://cgit.git.savannah.gnu.org/cgit/bison.git) Assertion Failure) third-party-advisory

vuldb.com/?submit.622299 (Submit #622299 | GNU Bison Bison the newest master(2ceaf03-Jul10 in https://cgit.git.savannah.gnu.org/cgit/bison.git) Assertion Failure (Duplicate)) third-party-advisory

github.com/akimd/bison/issues/113 issue-tracking

github.com/akimd/bison/issues/114 exploit issue-tracking

www.gnu.org/ product

cve.org (CVE-2025-8733)

nvd.nist.gov (CVE-2025-8733)

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