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    CVE-2015-5309

    Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.

    Published:Dec 7, 2015
    Last Modified:Apr 12, 2025
    EPS:Dec 7, 2015
    EPSS Score:0.01736
    CVSS Score:4.3

    Affected Products

    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Opensuse
    Product
    Opensuse
    Vendor
    Simon Tatham
    Product
    Putty

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173021.html
    http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173094.html
    http://lists.opensuse.org/opensuse-updates/2015-11/msg00099.html
    http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-ech-overflow.html
    http://www.debian.org/security/2015/dsa-3409
    http://www.securitytracker.com/id/1034308
    https://security.gentoo.org/glsa/201606-01
    http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173021.html
    http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173094.html
    http://lists.opensuse.org/opensuse-updates/2015-11/msg00099.html
    http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-ech-overflow.html
    http://www.debian.org/security/2015/dsa-3409
    http://www.securitytracker.com/id/1034308
    https://security.gentoo.org/glsa/201606-01

    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