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    CVE-2023-29421

    An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.

    Published:Apr 6, 2023
    Last Modified:Feb 12, 2025
    EPS:Apr 6, 2023
    EPSS Score:0.00134
    CVSS Score:8.8

    Affected Products

    Vendor
    Bzip3 Project
    Product
    Bzip3

    Exploits

    https://github.com/kspalaiologos/bzip3/issues/94https://github.com/kspalaiologos/bzip3/issues/94

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2023-29415 (CVSS 6.5) — An issue was discovered in libbzip3.a in bzip3 before 1.3.0. A denial of service (process hang) can occur with…
    CVE-2023-29416 (CVSS 6.5) — An issue was discovered in libbzip3.a in bzip3 before 1.3.0. A bz3_decode_block out-of-bounds write can occur …
    CVE-2023-29418 (CVSS 6.5) — An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an xwrite out-of-bounds read.…
    CVE-2023-29419 (CVSS 6.5) — An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is a bz3_decode_block out-of-bounds read.…
    CVE-2023-29420 (CVSS 6.5) — An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is a crash caused by an invalid memmove in …
    CVE-2023-29417 (CVSS 6.5) — An issue was discovered in libbzip3.a in bzip3 1.2.2. There is a bz3_decompress out-of-bounds read in certain …

    References

    https://github.com/kspalaiologos/bzip3/compare/1.2.2...1.2.3
    https://github.com/kspalaiologos/bzip3/issues/94
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4JLSE25SV7K2NB6FTFT4UHJOJUHBHYHY/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NA7S7HDUAINOTCSWQZ5LIW756DYY22V2/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMLFV2FJK3CM7NJLVPZI5RUAFQZICPWW/
    https://github.com/kspalaiologos/bzip3/compare/1.2.2...1.2.3
    https://github.com/kspalaiologos/bzip3/issues/94
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4JLSE25SV7K2NB6FTFT4UHJOJUHBHYHY/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NA7S7HDUAINOTCSWQZ5LIW756DYY22V2/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMLFV2FJK3CM7NJLVPZI5RUAFQZICPWW/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High