security flaw

Multiple vulnerabilities in KDE 2 and KDE 3.x through 3.0.5 do not quote certain parameters that are inserted into a shell command, which could allow remote attackers to execute arbitrary commands via (1) URLs, (2) filenames, or (3) e-mail addresses.

Buffer overflow in konqueror in KDE 2.1 through 3.0 and 3.0.2 allows remote attackers to cause a denial of service (crash) via an IMG tag with large width and height attributes.

security flaw

KDE 2 and KDE 3.1.1 and earlier 3.x versions allows attackers to execute arbitrary commands via (1) PostScript (PS) or (2) PDF files, related to missing -dPARANOIDSAFER and -dSAFER arguments when using the kghostview Ghostscript viewer.

The GnuPG plugin in kopete before 0.6.2 does not properly cleanse the command line when executing gpg, which allows remote attackers to execute arbitrary commands.

Safari 1.0 Beta 2 (v73) and earlier does not validate the Common Name (CN) field for X.509 Certificates, which could allow remote attackers to spoof certificates.

security flaw

Konqueror Embedded and KDE 2.2.2 and earlier does not validate the Common Name (CN) field for X.509 Certificates, which could allow remote attackers to spoof certificates via a man-in-the-middle attack.

security flaw

KDE Konqueror for KDE 3.1.2 and earlier does not remove authentication credentials from URLs of the "user:password@host" form in the HTTP-Referer header, which could allow remote web sites to steal the credentials for pages that link to the sites.

security flaw

Konqueror in KDE 3.1.3 and earlier (kdelibs) allows remote attackers to bypass intended cookie access restrictions on a web application via "%2e%2e" (encoded dot dot) directory traversal sequences in a URL, which causes Konqueror to send the cookie outside the specified URL subsets, e.g. to a vulnerable application that runs on the same server as the target application.

security flaw

KDM in KDE 3.1.3 and earlier does not verify whether the pam_setcred function call succeeds, which may allow attackers to gain root privileges by triggering error conditions within PAM modules, as demonstrated in certain configurations of the MIT pam_krb5 module.

security flaw

KDM in KDE 3.1.3 and earlier uses a weak session cookie generation algorithm that does not provide 128 bits of entropy, which allows attackers to guess session cookies via brute force methods and gain access to the user session.

Local users can perform arbitrary unmounts via smb4k mount helper due to lack of input validation

An Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') vulnerability allows local users ton perform arbitrary unmounts via smb4k mount helper

Krita: Krita: Heap-based buffer overflow via manipulated TGA file

In KDE Krita before 5.2.13, loading a manipulated TGA file could result in a heap-based buffer overflow in plugins/impex/tga/kis_tga_import.cpp (aka KisTgaImport). Control flow proceeds even when a number of pixels becomes negative.

In KDE Skanpage before 25.08.0, an attempt at file overwrite can result in the contents of the new file at the beginning followed by the partial contents of the old file at the end, because of use of QIODevice::ReadWrite instead of QODevice::WriteOnly.

In the KDE Connect information-exchange protocol before 2025-04-18, a packet can be crafted to temporarily change the displayed information about a device, because broadcast UDP is used. This affects KDE Connect before 1.33.0 on Android, KDE Connect before 25.04 on desktop, KDE Connect before 0.5 on iOS, Valent before 1.0.0.alpha.47, and GSConnect before 59.

kde-connect: KDE Connect: Unpairing of devices via invalid broadcast UDP packet

In KDE Connect before 1.33.0 on Android, a packet can be crafted that causes two paired devices to unpair. Specifically, it is an invalid discovery packet sent over broadcast UDP.

The KDE Connect verification-code protocol before 2025-04-18 uses only 8 characters and therefore allows brute-force attacks. This affects KDE Connect before 1.33.0 on Android, KDE Connect before 25.04 on desktop, KDE Connect before 0.5 on iOS, Valent before 1.0.0.alpha.47, and GSConnect before 59.

kde-connect: KDE Connect: Application crash via malicious device IDs

In KDE Connect before 1.33.0 on Android, malicious device IDs (sent via broadcast UDP) could cause an application crash.

libarchiveplugin.cpp in KDE ark before 24.12.0 can extract to an absolute path from an archive.

ispdbservice.cpp in KDE Kmail before 6.2.0 allows man-in-the-middle attackers to trigger use of an attacker-controlled mail server because cleartext HTTP is used for a URL such as http://autoconfig.example.com or http://example.com/.well-known/autoconfig for retrieving the configuration. This is related to kmail-account-wizard.

KDE messagelib before 25.11.90 ignores SSL errors for threatMatches:find in the Google Safe Browsing Lookup API (aka phishing API), which might allow spoofing of threat data. NOTE: this Lookup API is not contacted in the messagelib default configuration.