DEBIAN-CVE-2026-68768
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-68768
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-68768.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-68768
- Upstream
- Published
- 2026-08-22T15:16:20Z
- Modified
- 2026-09-14T17:03:46Z
- Severity
-
- 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
- Summary
- [none]
- Details
-
hashcat contains a heap-based buffer overflow (out-of-bounds write) in the outfile_write() function in src/outfile.c. When assembling output into a fixed-size buffer (HCBUFSIZ_LARGE, ~16 MB), the function sequentially appends the username, separator, hash, and plaintext via memcpy without validating that the accumulated length stays within the buffer capacity. When run with --username --show against a crafted hash file containing an oversized username that nearly fills the buffer, the total assembled output exceeds the buffer, causing a heap buffer overflow that can corrupt memory and crash the process.
- References
Affected packages
Debian:12 / hashcat
Package
- Name
- hashcat
- Purl
- pkg:deb/debian/hashcat?arch=source&distro=bookworm
Debian:13 / hashcat
Package
- Name
- hashcat
- Purl
- pkg:deb/debian/hashcat?arch=source&distro=trixie
Debian:14 / hashcat
Package
- Name
- hashcat
- Purl
- pkg:deb/debian/hashcat?arch=source&distro=forky