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WebKitGTK+ Security Advisory                               WSA-2016-0004
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Date reported      : May 30, 2016
Advisory ID        : WSA-2016-0004
Advisory URL       : http://webkitgtk.org/security/WSA-2016-0004.html
CVE identifiers    : CVE-2016-1854, CVE-2016-1856, CVE-2016-1857,
                     CVE-2016-1858, CVE-2016-1859.

Several vulnerabilities were discovered in WebKitGTK+.

CVE-2016-1854
    Versions affected: WebKitGTK+ before 2.12.1.
    Credit to Anonymous working with Trend Micro's Zero Day Initiative.
    WebKit, as used in Apple iOS before 9.3.2, Safari before 9.1.1, and
    tvOS before 9.2.1, allows remote attackers to execute arbitrary code
    or cause a denial of service (memory corruption) via a crafted web
    site, a different vulnerability than CVE-2016-1855, CVE-2016-1856,
    and CVE-2016-1857.

CVE-2016-1856
    Versions affected: WebKitGTK+ before 2.12.1.
    Credit to lokihardt working with Trend Micro's Zero Day Initiative.
    WebKit, as used in Apple iOS before 9.3.2, Safari before 9.1.1, and
    tvOS before 9.2.1, allows remote attackers to execute arbitrary code
    or cause a denial of service (memory corruption) via a crafted web
    site, a different vulnerability than CVE-2016-1854, CVE-2016-1855,
    and CVE-2016-1857.

CVE-2016-1857
    Versions affected: WebKitGTK+ before 2.12.3.
    Credit to Jeonghoon Shin@A.D.D and Liang Chen, Zhen Feng, wushi of
    KeenLab, Tencent working with Trend Micro's Zero Day Initiative.
    WebKit, as used in Apple iOS before 9.3.2, Safari before 9.1.1, and
    tvOS before 9.2.1, allows remote attackers to execute arbitrary code
    or cause a denial of service (memory corruption) via a crafted web
    site, a different vulnerability than CVE-2016-1854, CVE-2016-1855,
    and CVE-2016-1856.

CVE-2016-1858
    Versions affected: WebKitGTK+ before 2.12.0.
    Credit to Anonymous.
    WebKit, as used in Apple iOS before 9.3.2, Safari before 9.1.1, and
    tvOS before 9.2.1, improperly tracks taint attributes, which allows
    remote attackers to obtain sensitive information via a crafted web
    site.

CVE-2016-1859
    Versions affected: WebKitGTK+ before 2.12.1.
    Credit to Liang Chen, wushi of KeenLab, Tencent working with Trend
    Micro's Zero Day Initiative.
    The WebKit Canvas implementation in Apple iOS before 9.3.2, Safari
    before 9.1.1, and tvOS before 9.2.1 allows remote attackers to
    execute arbitrary code or cause a denial of service (memory
    corruption) via a crafted web site.


We recommend updating to the last stable version of WebKitGTK+. It is
the best way of ensuring that you are running a safe version of
WebKitGTK+. Please check our website for information about the last
stable releases.

Further information about WebKitGTK+ Security Advisories can be found
at: http://webkitgtk.org/security.html

The WebKitGTK+ team,
May 30, 2016