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A vulnerability was found in saitoha libsixel up to 1.10.3. Affected by this issue is the function sixel_debug_print_palette of the file src/encoder.c of the component img2sixel. The manipulation results in stack-based buffer overflow. The attack must be initiated from a local position. The exploit has been made public and could be used. The patch is identified as 316c086e79d66b62c0c4bc66229ee894e4fdb7d1. Applying a patch is advised to resolve this issue.

Es wurde eine Schwachstelle in saitoha libsixel bis 1.10.3 entdeckt. Das betrifft die Funktion sixel_debug_print_palette der Datei src/encoder.c der Komponente img2sixel. Die Manipulation führt zu stack-based buffer overflow. Der Angriff muss lokal durchgeführt werden. Der Exploit steht zur öffentlichen Verfügung. Der Name des Patches ist 316c086e79d66b62c0c4bc66229ee894e4fdb7d1. Als bestmögliche Massnahme wird Patching empfohlen.

PUBLISHED Reserved 2025-08-21 | Published 2025-08-21 | Updated 2025-08-21 | Assigner VulDB




MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 5.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
MEDIUM: 5.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
4.3AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C

Problem types

Stack-based Buffer Overflow

Memory Corruption

Product status

1.10.0
affected

1.10.1
affected

1.10.2
affected

1.10.3
affected

Timeline

2025-08-21:Advisory disclosed
2025-08-21:VulDB entry created
2025-08-21:VulDB entry last update

Credits

xdcao (VulDB User) reporter

References

vuldb.com/?id.320905 (VDB-320905 | saitoha libsixel img2sixel encoder.c sixel_debug_print_palette stack-based overflow) vdb-entry technical-description

vuldb.com/?ctiid.320905 (VDB-320905 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.632366 (Submit #632366 | LibSixel img2sixel LibSixel version 1.10.3 (commit 6dd664c) compiled on Aug 2 2025 and the newest master version. Heap Buffer Overflow) third-party-advisory

github.com/saitoha/libsixel/issues/200 issue-tracking

github.com/saitoha/libsixel/issues/200 issue-tracking

drive.google.com/...ZcySqeoqXXhsxd0HZCjClJ7/view?usp=sharing exploit

github.com/...ommit/316c086e79d66b62c0c4bc66229ee894e4fdb7d1 patch

cve.org (CVE-2025-9300)

nvd.nist.gov (CVE-2025-9300)

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