Infradead: >> Openconnect >> 1.00 Security Vulnerabilities
OpenConnect through 8.08 mishandles negative return values from X509_check_ function calls, which might assist attackers in performing man-in-the-middle attacks.
CVSS Score
5.9
EPSS Score
0.002
Published
2020-04-23
OpenConnect VPN client with GnuTLS before 5.02 contains a heap overflow if MTU is increased on reconnection.
CVSS Score
9.8
EPSS Score
0.007
Published
2020-02-13
process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.
CVSS Score
9.8
EPSS Score
0.048
Published
2019-09-17
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.
CVSS Score
5.0
EPSS Score
0.01
Published
2013-02-24
Heap-based buffer overflow in OpenConnect 3.18 allows remote servers to cause a denial of service via a crafted greeting banner.
CVSS Score
7.8
EPSS Score
0.011
Published
2012-06-07
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.
CVSS Score
6.4
EPSS Score
0.002
Published
2010-10-14
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.
CVSS Score
5.0
EPSS Score
0.006
Published
2010-10-14
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.
CVSS Score
5.0
EPSS Score
0.003
Published
2010-10-14
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.
CVSS Score
5.0
EPSS Score
0.003
Published
2010-10-14