DEBIAN-CVE-2026-119196
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-119196
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-119196.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-119196
- Upstream
- Published
- 2026-10-29T20:17:30Z
- Modified
- 2026-10-30T09:00:07Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.5, constructed BIT STRING decoding repeatedly shifts and copies the complete bit value accumulated from earlier fragments. Attacker-controlled BER or CER input contains many constructed BIT STRING fragments; schema-driven DER also accepts a definite-length constructed BIT STRING. BitStringPayloadDecoder repeatedly calls BitString.fromOctetString with the prior bitString as prepend, shifting an ever-growing SizedInteger for each fragment and causing quadratic work. Large fragmented values can exhaust CPU during decode() without requiring later conversion or formatting. This issue is fixed in version 0.6.5.
- References
Affected packages
Debian:12 / pyasn1
Package
- Name
- pyasn1
- Purl
- pkg:deb/debian/pyasn1?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / pyasn1
Package
- Name
- pyasn1
- Purl
- pkg:deb/debian/pyasn1?arch=source&distro=trixie
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:14 / pyasn1
Package
- Name
- pyasn1
- Purl
- pkg:deb/debian/pyasn1?arch=source&distro=forky