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    CVE-2021-27135

    xterm before Patch #366 allows remote attackers to execute arbitrary code or cause a denial of service (segmentation fault) via a crafted UTF-8 combining character sequence.

    Published:Feb 10, 2021
    Last Modified:Nov 21, 2024
    EPS:Feb 10, 2021
    EPSS Score:0.00673
    CVSS Score:9.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Invisible-island
    Product
    Xterm
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Eus

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://seclists.org/fulldisclosure/2021/May/52
    http://www.openwall.com/lists/oss-security/2021/02/10/7
    https://access.redhat.com/security/cve/CVE-2021-27135
    https://bugzilla.redhat.com/show_bug.cgi?id=1927559
    https://bugzilla.suse.com/show_bug.cgi?id=1182091
    https://github.com/ThomasDickey/xterm-snapshots/commit/82ba55b8f994ab30ff561a347b82ea340ba7075c
    https://invisible-island.net/xterm/xterm.log.html
    https://lists.debian.org/debian-lts-announce/2021/02/msg00019.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/35LK2ZXEIJUOGOA7FV2TJL3L6LFJ4X5S/
    https://news.ycombinator.com/item?id=26524650
    https://security.gentoo.org/glsa/202208-22
    https://www.openwall.com/lists/oss-security/2021/02/09/7
    https://www.openwall.com/lists/oss-security/2021/02/09/9
    http://seclists.org/fulldisclosure/2021/May/52
    http://www.openwall.com/lists/oss-security/2021/02/10/7
    https://access.redhat.com/security/cve/CVE-2021-27135
    https://bugzilla.redhat.com/show_bug.cgi?id=1927559
    https://bugzilla.suse.com/show_bug.cgi?id=1182091
    https://github.com/ThomasDickey/xterm-snapshots/commit/82ba55b8f994ab30ff561a347b82ea340ba7075c
    https://invisible-island.net/xterm/xterm.log.html
    https://lists.debian.org/debian-lts-announce/2021/02/msg00019.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/35LK2ZXEIJUOGOA7FV2TJL3L6LFJ4X5S/
    https://news.ycombinator.com/item?id=26524650
    https://security.gentoo.org/glsa/202208-22
    https://www.openwall.com/lists/oss-security/2021/02/09/7
    https://www.openwall.com/lists/oss-security/2021/02/09/9

    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