Unknown vulnerability in sh_hash_compdata for Samhain 1.8.9 through 2.0.1 might allow attackers to cause a denial of service (null pointer dereference).

Microsoft Internet Explorer 6.0 SP1 allows remote attackers to cause a denial of service (browser crash) via a link with "::{" (colon colon left brace), which triggers a null dereference when the user attempts to save the link using "Save As" and Internet Explorer prepares an error message with an attacker-controlled format string.

The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP options using FAST output or verbose mode, allows remote attackers to cause a denial of service (crash) via packets with invalid TCP/IP options, which trigger a null dereference.

The clientAbortBody function in client_side.c in Squid Web Proxy Cache before 2.6 STABLE6 allows remote attackers to cause a denial of service (segmentation fault) via unspecified vectors that trigger a null dereference. NOTE: in a followup advisory, a researcher claimed that the issue was a buffer overflow that was not fixed in STABLE6. However, the vendor's bug report clearly shows that the researcher later retracted this claim, because the tested product was actually STABLE5.

HTTPMail service in MailEnable Professional 1.18 does not properly handle arguments to the Authorization header, which allows remote attackers to cause a denial of service (null dereference and application crash). NOTE: This is a different vulnerability than CVE-2005-1348.

Multiple unknown vulnerabilities in MMDF on OpenServer 5.0.6 and 5.0.7, and possibly other operating systems, may allow attackers to cause a denial of service by triggering a null dereference.

The HTTP client and server in giFT-FastTrack 0.8.6 and earlier allows remote attackers to cause a denial of service (crash), possibly via an empty search query, which triggers a NULL dereference.

The SMB SID snooping capability in Ethereal 0.9.15 to 0.10.4 allows remote attackers to cause a denial of service (process crash) via a handle without a policy name, which causes a null dereference.

The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that triggers a null dereference.

The png_handle_iCCP function in libpng 1.2.5 and earlier allows remote attackers to cause a denial of service (application crash) via a certain PNG image that triggers a null dereference.

Mozilla allows remote attackers to cause a denial of service (application crash from null dereference or infinite loop) via a web page that contains a (1) TEXTAREA, (2) INPUT, (3) FRAMESET or (4) IMG tag followed by a null character and some trailing characters, as demonstrated by mangleme.

mah-jong before 1.6.2 allows remote attackers to cause a denial of service (server crash) via a missing argument, which triggers a null pointer dereference.

The XPM parser in the QT library (qt3) before 3.3.3 allows remote attackers to cause a denial of service (application crash) via a malformed image file that triggers a null dereference, a different vulnerability than CVE-2004-0693.

The GIF parser in the QT library (qt3) before 3.3.3 allows remote attackers to cause a denial of service (application crash) via a malformed image file that triggers a null dereference, a different vulnerability than CVE-2004-0692.

The SPNEGO dissector in Ethereal 0.9.8 to 0.10.3 allows remote attackers to cause a denial of service (crash) via unknown attack vectors that cause a null pointer dereference.

The AuthenticationDialogue function in cfservd for Cfengine 2.0.0 to 2.1.7p1 does not properly check the return value of the ReceiveTransaction function, which leads to a failed malloc call and triggers to a null dereference, which allows remote attackers to cause a denial of service (crash).

The Equalizer Load-balancer for serial network interfaces (eql.c) in Linux kernel 2.6.x up to 2.6.7 allows local users to cause a denial of service via a non-existent device name that triggers a null dereference.

Internet Explorer 6 allows remote attackers to cause a denial of service (crash) via Javascript that creates a new popup window and disables the imagetoolbar functionality with a META tag, which triggers a null dereference.

mshtml.dll in Microsoft Internet Explorer 6.0.2800 allows remote attackers to cause a denial of service (crash) via a table containing a form that crosses multiple td elements, and whose "float: left" class is defined in a link to a CSS stylesheet after the end of the table, which may trigger a null dereference.

The Negotiate Security Software Provider (SSP) interface in Windows 2000, Windows XP, and Windows Server 2003, allows remote attackers to cause a denial of service (crash from null dereference) or execute arbitrary code via a crafted SPNEGO NegTokenInit request during authentication protocol selection.