GNOME gnome-keyring 3.4.0 through 3.4.1, when gpg-cache-method is set to "idle" or "timeout," does not properly limit the amount of time a passphrase is cached, which allows attackers to have an unspecified impact via unknown attack vectors.
(1) services/twitter/twitter-contact-view.c and (2) services/twitter/twitter-item-view.c in libsocialweb before 0.25.20 automatically connect to Twitter when no Twitter account is set, which might allow remote attackers to obtain sensitive information via a man-in-the-middle (MITM) attack.
The gnome-shell plugin 3.4.1 in GNOME allows remote attackers to force the download and installation of arbitrary extensions from extensions.gnome.org via a crafted web page.
librsvg before 2.34.1 uses the node name to identify the type of node, which allows context-dependent attackers to cause a denial of service (NULL pointer dereference) and possibly execute arbitrary code via a SVG file with a node with the element name starting with "fe," which is misidentified as a RsvgFilterPrimitive.
The register_application function in atk-adaptor/bridge.c in GNOME at-spi2-atk 2.5.2 does not seed the random number generator and generates predictable temporary file names, which makes it easier for local users to create or truncate files via a symlink attack on a temporary socket file in /tmp/at-spi2.
libgdata before 0.10.2 and 0.11.x before 0.11.1 does not validate SSL certificates, which allows remote attackers to obtain user names and passwords via a man-in-the-middle (MITM) attack with a spoofed certificate.
libsoup 2.32.2 and earlier does not validate certificates or clear the trust flag when the ssl-ca-file does not exist, which allows remote attackers to bypass authentication by connecting with a SSL connection.
Multiple integer overflows in the read_bitmap_file_data function in io-xbm.c in gdk-pixbuf before 2.26.1 allow remote attackers to cause a denial of service (application crash) via a negative (1) height or (2) width in an XBM file, which triggers a heap-based buffer overflow.
gnome-screensaver 3.4.x before 3.4.4 and 3.5.x before 3.5.4, when multiple screens are used, only locks the screen with the active focus, which allows physically proximate attackers to bypass screen locking and access an unattended workstation.
(1) AlbumTab.py, (2) ArtistTab.py, (3) LinksTab.py, and (4) LyricsTab.py in the Context module in GNOME Rhythmbox 0.13.3 and earlier allows local users to execute arbitrary code via a symlink attack on a temporary HTML template file in the /tmp/context directory.