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openSUSE-SU-2026:21392-1

Опубликовано: 20 июл. 2026
Источник: suse-cvrf

Описание

Security update for python-pyasn1

This update for python-pyasn1 fixes the following issues:

  • CVE-2026-59884: BER/CER/DER decoder denial of service via unbounded long-form tag IDs (bsc#1271464).
  • CVE-2026-59885: quadratic complexity in OBJECT IDENTIFIER and RELATIVE-OID processing allows denial of service (bsc#1271465).
  • CVE-2026-59886: uncontrolled resource consumption when converting decoded REAL values (bsc#1271466).

Список пакетов

openSUSE Leap 16.0
python313-pyasn1-0.6.1-160000.5.1

Ссылки

Описание

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER decoder shared by the CER and DER codecs parses long-form tags by accumulating continuation octets without an upper bound on the tag ID size, allowing a crafted input to force construction of an arbitrarily large integer with CPU cost growing quadratically and to trigger unhandled ValueError exceptions in Python 3.11+ error formatting paths. Any application decoding untrusted BER, CER, or DER input is affected. This issue is fixed in version 0.6.4.

Затронутые продукты
openSUSE Leap 16.0:python313-pyasn1-0.6.1-160000.5.1
Ссылки

Описание

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.

Затронутые продукты
openSUSE Leap 16.0:python313-pyasn1-0.6.1-160000.5.1
Ссылки

Описание

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the univ.Real type converted its mantissa, base, and exponent value to a Python float using exact big-integer exponentiation. A BER, CER, or DER encoded REAL value only a few bytes long can carry a very large exponent, causing float conversion through prettyPrint(), str(), comparison, arithmetic, int(), or an explicit float() call to consume excessive CPU and memory and hang applications that decode untrusted ASN.1 data and then print, log, or compare decoded objects. This issue is fixed in version 0.6.4.

Затронутые продукты
openSUSE Leap 16.0:python313-pyasn1-0.6.1-160000.5.1
Ссылки