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    CVE-2018-11243

    PackLinuxElf64::unpack in p_lx_elf.cpp in UPX 3.95 allows remote attackers to cause a denial of service (double free), limit the ability of a malware scanner to operate on the entire original data, or possibly have unspecified other impact via a crafted file.

    Published:May 18, 2018
    Last Modified:Apr 11, 2025
    EPS:May 18, 2018
    EPSS Score:0.00508
    CVSS Score:7.8

    Affected Products

    Vendor
    Upx
    Product
    Upx

    Exploits

    https://github.com/upx/upx/issues/206https://github.com/upx/upx/issues/207https://github.com/upx/upx/issues/206https://github.com/upx/upx/issues/207

    Common Weakness Enumeration

    CWE-415 Double Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2025-2849 (CVSS 4.8) — A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is the function P…
    CVE-2024-3209 (CVSS 5.5) — A vulnerability was found in UPX up to 4.2.2. It has been rated as critical. This issue affects the function g…
    CVE-2021-46179 (CVSS 6.5) — Reachable Assertion vulnerability in upx before 4.0.0 allows attackers to cause a denial of service via crafte…
    CVE-2021-43317 (CVSS 7.5) — A heap-based buffer overflows was discovered in upx, during the generic pointer 'p' points to an inaccessible …
    CVE-2021-43315 (CVSS 7.5) — A heap-based buffer overflows was discovered in upx, during the generic pointer 'p' points to an inaccessible …
    CVE-2021-43316 (CVSS 7.5) — A heap-based buffer overflow was discovered in upx, during the generic pointer 'p' points to an inaccessible a…
    CVE-2021-43312 (CVSS 7.5) — A heap-based buffer overflow was discovered in upx, during the variable 'bucket' points to an inaccessible add…
    CVE-2021-43311 (CVSS 7.5) — A heap-based buffer overflow was discovered in upx, during the generic pointer 'p' points to an inaccessible a…
    CVE-2021-43313 (CVSS 7.5) — A heap-based buffer overflow was discovered in upx, during the variable 'bucket' points to an inaccessible add…
    CVE-2021-43314 (CVSS 7.5) — A heap-based buffer overflows was discovered in upx, during the generic pointer 'p' points to an inaccessible …

    References

    http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00001.html
    http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html
    http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html
    http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00008.html
    https://github.com/upx/upx/blob/devel/NEWS
    https://github.com/upx/upx/issues/206
    https://github.com/upx/upx/issues/207
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/
    http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00001.html
    http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00003.html
    http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00007.html
    http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00008.html
    https://github.com/upx/upx/blob/devel/NEWS
    https://github.com/upx/upx/issues/206
    https://github.com/upx/upx/issues/207
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/

    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