Opera: >> Opera Browser >> 11.64 Security Vulnerabilities
Unspecified vulnerability in Opera before 12.00 on Mac OS X has unknown impact and attack vectors, related to a "moderate severity issue."
CVSS Score
10.0
EPSS Score
0.003
Published
2012-06-14
Opera before 11.65 does not ensure that the address field corresponds to the displayed web page during blocked navigation, which makes it easier for remote attackers to conduct spoofing attacks by detecting and preventing attempts to load a different web page.
CVSS Score
4.3
EPSS Score
0.007
Published
2012-06-14
Opera before 12.00 Beta allows user-assisted remote attackers to cause a denial of service (application crash) via a crafted web page that is not properly handled during a reload, as demonstrated by a "multiple origin camera test" page.
CVSS Score
4.3
EPSS Score
0.004
Published
2012-06-14
Opera before 12.00 Beta allows remote attackers to cause a denial of service (application crash) via a web page that contains invalid character encodings.
CVSS Score
5.0
EPSS Score
0.004
Published
2012-06-14
Opera before 12.00 Beta allows remote attackers to cause a denial of service (application hang) via an absolutely positioned wrap=off TEXTAREA element located next to an "overflow: auto" block element.
CVSS Score
5.0
EPSS Score
0.005
Published
2012-06-14
Opera before 12.00 Beta allows remote attackers to cause a denial of service (application crash) via crafted characters in domain names, as demonstrated by "IDNA2008 tests."
CVSS Score
5.0
EPSS Score
0.005
Published
2012-06-14
Opera before 12.00 Beta allows user-assisted remote attackers to cause a denial of service (application hang) via JavaScript code that changes a form before submission.
CVSS Score
4.3
EPSS Score
0.004
Published
2012-06-14
Opera before 12.00 Beta allows remote attackers to cause a denial of service (memory consumption or application hang) via an IFRAME element that uses the src="#" syntax to embed a parent document.
CVSS Score
5.0
EPSS Score
0.005
Published
2012-06-14
Opera cannot properly restrict modifications to cookies established in HTTPS sessions, which allows man-in-the-middle attackers to overwrite or delete arbitrary cookies via a Set-Cookie header in an HTTP response, related to lack of the HTTP Strict Transport Security (HSTS) includeSubDomains feature, aka a "cookie forcing" issue.
CVSS Score
5.8
EPSS Score
0.004
Published
2011-08-09
Opera before 10.10 permits cross-origin loading of CSS stylesheets even when the stylesheet download has an incorrect MIME type and the stylesheet document is malformed, which allows remote attackers to obtain sensitive information via a crafted document.
CVSS Score
4.3
EPSS Score
0.005
Published
2010-02-18