The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on certificates that may have been obtained from untrusted sources. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).
CVSS Score
5.9
EPSS Score
0.006
Published
2021-02-16
The HTTP/2 protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party cookies are sent, aka a "HEIST" attack.
CVSS Score
5.3
EPSS Score
0.039
Published
2016-09-06
The HTTPS protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party cookies are sent, aka a "HEIST" attack.
CVSS Score
5.3
EPSS Score
0.039
Published
2016-09-06
Safari in Apple iOS before 9.3.3 allows remote attackers to spoof the displayed URL via an HTTP response specifying redirection to an invalid TCP port number.
CVSS Score
5.4
EPSS Score
0.004
Published
2016-07-22
TelephonyUI Framework in Apple iOS 7 before 7.1, when Safari is used, does not require user confirmation for FaceTime audio calls, which allows remote attackers to obtain telephone number or e-mail address information via a facetime-audio: URL.
CVSS Score
5.0
EPSS Score
0.271
Published
2014-03-14
Apple Safari before 6.0.1 does not properly handle the Quarantine attribute of HTML documents, which allows user-assisted remote attackers to read arbitrary files by leveraging the presence of a downloaded document.
CVSS Score
4.3
EPSS Score
0.004
Published
2012-09-20
The Form Autofill feature in Apple Safari before 6.0.1 does not restrict the filled fields to the set of fields contained in an Autofill popover, which allows remote attackers to obtain the Me card from an Address Book via a crafted web site.
CVSS Score
4.3
EPSS Score
0.003
Published
2012-09-20
Apple Safari before 6.0.1 makes http requests for https URIs in certain circumstances involving a paste into the address bar, which allows user-assisted remote attackers to obtain sensitive information by sniffing the network.
CVSS Score
4.3
EPSS Score
0.004
Published
2012-09-20
Yahoo! Toolbar 1.0.0.5 and earlier for Chrome and Safari allows remote attackers to modify the configured search URL, and intercept search terms, via a crafted web page.
CVSS Score
5.8
EPSS Score
0.002
Published
2012-07-31
WebKit in Apple Safari before 5.1.4 does not properly handle redirects in conjunction with HTTP authentication, which might allow remote web servers to capture credentials by logging the Authorization HTTP header.
CVSS Score
5.0
EPSS Score
0.003
Published
2012-03-12