OpenConnect through 8.08 mishandles negative return values from X509_check_ function calls, which might assist attackers in performing man-in-the-middle attacks.

infradead · opensuse

OpenConnect VPN client with GnuTLS before 5.02 contains a heap overflow if MTU is increased on reconnection.

infradead

process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.

infradead · fedoraproject · debian · canonical · opensuse

The OpenConnectionTask::handleStateHelper function in Imap/Tasks/OpenConnectionTask.cpp in Trojita before 0.4.1 allows man-in-the-middle attackers to trigger use of cleartext for saving a message into a (1) sent or (2) draft folder via a PREAUTH response that prevents later use of the STARTTLS command.

trojita_project

Multiple integer overflows in X.org libchromeXvMC and libchromeXvMCPro in openChrome 0.3.2 and earlier allow X servers to trigger allocation of insufficient memory and a buffer overflow via vectors related to the (1) uniDRIOpenConnection and (2) uniDRIGetClientDriverName functions.

openchrome · x

Multiple integer overflows in X.org libGLX in Mesa 9.1.1 and earlier allow X servers to trigger allocation of insufficient memory and a buffer overflow via vectors related to the (1) XF86DRIOpenConnection and (2) XF86DRIGetClientDriverName functions.

mesa3d · x

Multiple stack-based buffer overflows in http.c in OpenConnect before 4.08 allow remote VPN gateways to cause a denial of service (application crash) via a long (1) hostname, (2) path, or (3) cookie list in a response.

infradead

Heap-based buffer overflow in OpenConnect 3.18 allows remote servers to cause a denial of service via a crafted greeting banner.

infradead

Unspecified vulnerability in OpenConnect before 2.23 allows remote AnyConnect SSL VPN servers to cause a denial of service (application crash) via a 404 HTTP status code.

infradead

OpenConnect before 2.26 places the webvpn cookie value in the debugging output, which might allow remote attackers to obtain sensitive information by reading this output, as demonstrated by output posted to the public openconnect-devel mailing list.

infradead

OpenConnect before 2.25 does not properly validate X.509 certificates, which allows man-in-the-middle attackers to spoof arbitrary AnyConnect SSL VPN servers via a crafted server certificate that (1) does not correspond to the server hostname or (2) is presented in circumstances involving a missing --cafile configuration option.

infradead

Double free vulnerability in OpenConnect before 1.40 might allow remote AnyConnect SSL VPN servers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted DTLS Cipher option during a reconnect operation.

infradead