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    CVE-2019-6706

    Lua 5.3.5 has a use-after-free in lua_upvaluejoin in lapi.c. For example, a crash outcome might be achieved by an attacker who is able to trigger a debug.upvaluejoin call in which the arguments have certain relationships.

    Published:Jan 10, 2019
    Last Modified:Nov 21, 2024
    EPS:Jan 23, 2019
    EPSS Score:0.00921
    CVSS Score:7.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Lua
    Product
    Lua
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    http://packetstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.htmlhttps://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ce36655682d/CVE-2019-6706.pdfhttp://packetstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.htmlhttps://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ce36655682d/CVE-2019-6706.pdfhttps://www.exploit-db.com/exploits/46246

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://lua-users.org/lists/lua-l/2019-01/msg00039.html
    http://packetstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.html
    https://access.redhat.com/security/cve/cve-2019-6706
    https://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ce36655682d/CVE-2019-6706.pdf
    https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e
    https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html
    http://lua-users.org/lists/lua-l/2019-01/msg00039.html
    http://packetstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.html
    https://access.redhat.com/security/cve/cve-2019-6706
    https://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ce36655682d/CVE-2019-6706.pdf
    https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e
    https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html

    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