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    CVE-2011-1956

    The bytes_repr_len function in Wireshark 1.4.5 uses an incorrect pointer argument, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via arbitrary TCP traffic.

    Published:Jun 6, 2011
    Last Modified:Apr 11, 2025
    EPS:Jun 6, 2011
    EPSS Score:0.06272
    CVSS Score:4.3

    Affected Products

    Vendor
    Wireshark
    Product
    Wireshark

    Exploits

    http://openwall.com/lists/oss-security/2011/05/31/19http://openwall.com/lists/oss-security/2011/06/01/9https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5837http://openwall.com/lists/oss-security/2011/05/31/19http://openwall.com/lists/oss-security/2011/06/01/9https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5837https://www.exploit-db.com/exploits/35873

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-76929 (CVSS 4.7) — Pcapng file parser crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76928 (CVSS 7.5) — X.509IF protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76927 (CVSS 4.7) — H.245 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76926 (CVSS 3.1) — BUSMASTER file parser abnormal exit in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76891 (CVSS 3.1) — Crash in sharkd in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76890 (CVSS 3.1) — Crash in sharkd in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76885 (CVSS 3.1) — Tektronix K12xx file parser crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76924 (CVSS 5.5) — Kerberos protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76923 (CVSS 5.5) — Bluetooth HFP Profile protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…
    CVE-2026-76922 (CVSS 5.5) — Bluetooth BR/EDR FHS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service…

    References

    http://openwall.com/lists/oss-security/2011/05/31/19
    http://openwall.com/lists/oss-security/2011/06/01/9
    http://secunia.com/advisories/44449
    http://www.wireshark.org/docs/relnotes/wireshark-1.4.6.html
    http://www.wireshark.org/news/20110418.html
    https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5837
    https://exchange.xforce.ibmcloud.com/vulnerabilities/67789
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14943
    http://openwall.com/lists/oss-security/2011/05/31/19
    http://openwall.com/lists/oss-security/2011/06/01/9
    http://secunia.com/advisories/44449
    http://www.wireshark.org/docs/relnotes/wireshark-1.4.6.html
    http://www.wireshark.org/news/20110418.html
    https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5837
    https://exchange.xforce.ibmcloud.com/vulnerabilities/67789
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14943

    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