Cette page suit l'état du correctif pour Ubuntu. La vulnérabilité elle-même est décrite sur la page CVE principale. Voir CVE-2026-59885 →

UBUNTU-CVE-2026-59885

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER, CER, and DER decoders process OBJECT IDENTIFIER and RELATIVE-OID values in quad...

Description d'origine

La description telle que publiée par la source (souvent en anglais).

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER, CER, and DER decoders process OBJECT IDENTIFIER and RELATIVE-OID values in quadratic time relative to the number of arcs, so a small crafted payload containing an OID with many arcs consumes excessive CPU per decode() call and can deny service to applications that decode untrusted ASN.1 data. The corresponding encoders have the same quadratic behavior when an application re-encodes previously decoded attacker-supplied values. This issue is fixed in version 0.6.4.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Paquets affectés

Ubuntu:Pro:14.04:LTS pyasn1

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:Pro:16.04:LTS pyasn1

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:Pro:18.04:LTS pyasn1

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:Pro:20.04:LTS pyasn1

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:22.04:LTS pyasn1

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.8-1ubuntu0.3"}]}]

Ubuntu:24.04:LTS pyasn1

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.8-4ubuntu0.3"}]}]

Ubuntu:26.04:LTS pyasn1

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.3-1ubuntu0.1"}]}]

Références

advisory ubuntu.com
report ubuntu.com
report cve.org
report github.com
report github.com