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    CVE-2018-5145

    Memory safety bugs were reported in Firefox ESR 52.6. These bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox ESR < 52.7 and Thunderbird < 52.7.

    Published:Mar 14, 2018
    Last Modified:Nov 25, 2025
    EPS:Jun 11, 2018
    EPSS Score:0.04116
    CVSS Score:9.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Thunderbird
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation

    Exploits

    No exploit reference

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    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…
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    References

    http://www.securityfocus.com/bid/103384
    http://www.securitytracker.com/id/1040514
    https://access.redhat.com/errata/RHSA-2018:0526
    https://access.redhat.com/errata/RHSA-2018:0527
    https://access.redhat.com/errata/RHSA-2018:0647
    https://access.redhat.com/errata/RHSA-2018:0648
    https://bugzilla.mozilla.org/buglist.cgi?bug_id=1261175%2C1348955
    https://lists.debian.org/debian-lts-announce/2018/03/msg00010.html
    https://lists.debian.org/debian-lts-announce/2018/03/msg00029.html
    https://security.gentoo.org/glsa/201811-13
    https://usn.ubuntu.com/3545-1/
    https://www.debian.org/security/2018/dsa-4139
    https://www.debian.org/security/2018/dsa-4155
    https://www.mozilla.org/security/advisories/mfsa2018-07/
    https://www.mozilla.org/security/advisories/mfsa2018-09/
    http://www.securityfocus.com/bid/103384
    http://www.securitytracker.com/id/1040514
    https://access.redhat.com/errata/RHSA-2018:0526
    https://access.redhat.com/errata/RHSA-2018:0527
    https://access.redhat.com/errata/RHSA-2018:0647
    https://access.redhat.com/errata/RHSA-2018:0648
    https://bugzilla.mozilla.org/buglist.cgi?bug_id=1261175%2C1348955
    https://lists.debian.org/debian-lts-announce/2018/03/msg00010.html
    https://lists.debian.org/debian-lts-announce/2018/03/msg00029.html
    https://security.gentoo.org/glsa/201811-13
    https://usn.ubuntu.com/3545-1/
    https://www.debian.org/security/2018/dsa-4139
    https://www.debian.org/security/2018/dsa-4155
    https://www.mozilla.org/security/advisories/mfsa2018-07/
    https://www.mozilla.org/security/advisories/mfsa2018-09/

    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