What’s Vulnerable › Vulnerabilities

CVE-2018-11243

• Severity: high (CVSS 7.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-05-18 · updated 2026-06-17
• Weakness: CWE-415

Description

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.

Affected products

• upx: 3.95

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

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