librsvg2: Stack exhaustion causing DoS

librsvg before 2.40.12 allows context-dependent attackers to cause a denial of service (infinite loop, stack consumption, and application crash) via cyclic references in an SVG document.

gdk-pixbuf: Heap overflow and DoS vulnerability when scaling a TGA file

io-tga.c in gdk-pixbuf before 2.32.0 uses heap memory after its allocation failed, which allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) and possibly execute arbitrary code via a crafted Truevision TGA (TARGA) file.

gdk-pixbuf: Heap overflow when scaling a GIF file

Integer overflow in the pixops_scale_nearest function in pixops/pixops.c in gdk-pixbuf before 2.32.1 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a crafted GIF image file, which triggers a heap-based buffer overflow.

gdk-pixbuf: Integer overflows in various pixops functions

Multiple integer overflows in the (1) pixops_composite_nearest, (2) pixops_composite_color_nearest, and (3) pixops_process functions in pixops/pixops.c in gdk-pixbuf before 2.33.1 allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted image, which triggers a heap-based buffer overflow.

shotwell: TLS certificates are not validated when publishing photos to external services

Shotwell version 0.22.0 (and possibly other versions) is vulnerable to a TLS/SSL certification validation flaw resulting in a potential for man in the middle attacks.

librsvg2: DoS parsing SVGs with circular definitions _rsvg_css_normalize_font_size() function

The _rsvg_css_normalize_font_size function in librsvg 2.40.2 allows context-dependent attackers to cause a denial of service (stack consumption and application crash) via circular definitions in an SVG document.

gdk-pixbuf: Out-of-bounds write in OneLine32() function

The OneLine32 function in io-ico.c in gdk-pixbuf before 2.35.3 allows remote attackers to cause a denial of service (out-of-bounds write and crash) via crafted dimensions in an ICO file.

eog: Out-of-bounds write when passing invalid UTF-8 to GMarkup

Eye of GNOME (aka eog) 3.16.5, 3.17.x, 3.18.x before 3.18.3, 3.19.x, and 3.20.x before 3.20.4, when used with glib before 2.44.1, allow remote attackers to cause a denial of service (out-of-bounds write and crash) via vectors involving passing invalid UTF-8 to GMarkup.

libgsf: Null pointer dereference in tar_directory_for_file()

An error within the "tar_directory_for_file()" function (gsf-infile-tar.c) in GNOME Structured File Library before 1.14.41 can be exploited to trigger a Null pointer dereference and subsequently cause a crash via a crafted TAR file.

gnome-power-manager: Screen not locked on resume from hibernate / suspend

gnome-power-manager 2.14.0 does not properly implement the lock_on_suspend and lock_on_hibernate settings for locking the screen when the suspend or hibernate button is pressed, which might make it easier for physically proximate attackers to access an unattended laptop via a resume action, a related issue to CVE-2010-2532.

Heap-based buffer overflow in the ms_escher_get_data function in plugins/excel/ms-escher.c in GNOME Office Gnumeric before 1.12.9 allows remote attackers to cause a denial of service (crash) via a crafted xls file with a crafted length value.

gdm: TOCTTOU race condition on /tmp/.X11-unix

GNOME Display Manager (gdm) before 2.21.1 allows local users to change permissions of arbitrary directories via a symlink attack on /tmp/.X11-unix/.

gimp: XWD plugin color map heap-based buffer overflow

Heap-based buffer overflow in the read_xwd_cols function in file-xwd.c in the X Window Dump (XWD) plug-in in GIMP 2.6.9 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via an X Window System (XWD) image dump with more colors than color map entries.

gimp: xwd plugin g_new() integer overflow

Integer overflow in the load_image function in file-xwd.c in the X Window Dump (XWD) plug-in in GIMP 2.6.9 and earlier, when used with glib before 2.24, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large color entries value in an X Window System (XWD) image dump.

librsvg2: local resource access vulnerability due to XML External Entity enablement

GNOME libsvg before 2.39.0 allows remote attackers to read arbitrary files via an XML document containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.

Gnome Online Accounts (GOA) 3.6.x before 3.6.3 and 3.7.x before 3.7.91, does not properly validate SSL certificates when creating accounts for providers who use the libsoup library, which allows man-in-the-middle attackers to obtain sensitive information such as credentials by sniffing the network. NOTE: this issue exists because of an incomplete fix for CVE-2013-0240.

gnome-screensaver: fails to start automatically

The default configuration in gnome-screensaver 3.5.4 through 3.6.0 sets the AutostartCondition line to fallback mode in the .desktop file, which prevents the program from starting automatically after login and allows physically proximate attackers to bypass screen locking and access an unattended workstation.

Gnome Online Accounts (GOA) 3.4.x, 3.6.x before 3.6.3, and 3.7.x before 3.7.5, does not properly validate SSL certificates when creating accounts such as Windows Live and Facebook accounts, which allows man-in-the-middle attackers to obtain sensitive information such as credentials by sniffing the network.

services/flickr/flickr.c in libsocialweb before 0.25.21 automatically connects to Flickr when no Flickr 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.