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Package "python3-pyasn1"

Name: python3-pyasn1

Description:

ASN.1 library for Python (Python 3 module)
Latest version: 0.6.3-1ubuntu0.2
Release: resolute (26.04)
Level: security
Repository: main
Head package: pyasn1
Homepage: https://pyasn1.readthedocs.io/en/latest/contents.html

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Other versions of "python3-pyasn1" in Resolute

Repository Area Version
base main 0.6.3-1
updates main 0.6.3-1ubuntu0.1

Changelog

Version: 0.6.3-1ubuntu0.2 2026-11-09 18:08:33 UTC

pyasn1 (0.6.3-1ubuntu0.2) resolute-security; urgency=medium

  * SECURITY UPDATE: DoS via quadratic binary REAL decoding
    - debian/patches/CVE-2026-119197.patch: decode the REAL mantissa in a
      single conversion in pyasn1/codec/ber/decoder.py,
      tests/codec/ber/test_decoder.py, tests/codec/cer/test_decoder.py,
      tests/codec/der/test_decoder.py.
    - CVE-2026-119197
  * SECURITY UPDATE: DoS via quadratic constructed BIT STRING decoding
    - debian/patches/CVE-2026-119196.patch: assemble constructed BIT STRING
      fragments in linear time in pyasn1/codec/ber/decoder.py,
      tests/codec/ber/test_decoder.py, tests/codec/cer/test_decoder.py,
      tests/codec/der/test_decoder.py.
    - CVE-2026-119196
  * SECURITY UPDATE: DoS via quadratic constructed string and ANY decoding
    - debian/patches/CVE-2026-119195.patch: join constructed string and ANY
      fragments only once in pyasn1/codec/ber/decoder.py,
      tests/codec/ber/test_decoder.py, tests/codec/cer/test_decoder.py,
      tests/codec/der/test_decoder.py.
    - CVE-2026-119195
  * SECURITY UPDATE: DoS via quadratic schemaless container decoding
    - debian/patches/CVE-2026-119194.patch: stop collecting tag sets once two
      distinct types are seen in pyasn1/codec/ber/decoder.py,
      tests/codec/__main__.py, tests/codec/test_decoder_schemaless.py.
    - CVE-2026-119194

 -- Charles Cochran Wed, 04 Nov 2026 14:17:48 -0600
Source diff to previous version
CVE-2026-119197 pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.5, binary REAL decoding builds a large mantissa one octet at a time by shifting a growing
CVE-2026-119196 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 acc
CVE-2026-119195 pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.5, constructed string and indefinite-length ANY decoding repeatedly concatenates each frag
CVE-2026-119194 pyasn1 is a generic ASN.1 library for Python. From 0.3.3 until 0.6.5, schemaless container decoding stores every decoded component's TagSet in a grow

Version: 0.6.3-1ubuntu0.1 2026-09-01 18:07:43 UTC

pyasn1 (0.6.3-1ubuntu0.1) resolute-security; urgency=medium

  * SECURITY UPDATE: pyasn1 BER/CER/DER decoder denial of service via
    unbounded long-form tag IDs
    - debian/patches/CVE-2026-59886.patch: Merge commit from fork in
      pyasn1/type/univ.py, tests/codec/ber/test_decoder.py,
      tests/codec/cer/test_decoder.py, tests/codec/der/test_decoder.py,
      tests/type/test_univ.py.
    - CVE-2026-59886
  * SECURITY UPDATE: Quadratic complexity in OBJECT IDENTIFIER and
    RELATIVE-OID processing allows denial of service
    - debian/patches/CVE-2026-59884.patch: Merge commit from fork in
      pyasn1/codec/ber/decoder.py, pyasn1/type/tag.py,
      tests/codec/ber/test_decoder.py, tests/codec/cer/test_decoder.py,
      tests/codec/der/test_decoder.py, tests/type/test_tag.py.
    - CVE-2026-59884
  * SECURITY UPDATE: Uncontrolled resource consumption when converting
    decoded REAL values
    - debian/patches/CVE-2026-59885.patch: Merge commit from fork in
      pyasn1/codec/ber/decoder.py, pyasn1/codec/ber/encoder.py,
      tests/codec/ber/test_decoder.py, tests/codec/ber/test_encoder.py.
    - CVE-2026-59885

 -- Marc Deslauriers Thu, 20 Aug 2026 13:20:40 -0400
CVE-2026-59886 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 u
CVE-2026-59884 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
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 qua


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