SUSE SLED15 / SLES15 Security Update : freetype2 (SUSE-SU-2020:1353-1)

medium Nessus Plugin ID 136800

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

This update for freetype2 to version 2.10.1 fixes the following issues :

Security issue fixed :

CVE-2018-6942: Fixed a NULL pointer dereference within ttinerp.c (bsc#1079603).

Non-security issues fixed :

Update to version 2.10.1

- The bytecode hinting of OpenType variation fonts was flawed, since the data in the `CVAR' table wasn't correctly applied.

- Auto-hinter support for Mongolian.

- The handling of the default character in PCF fonts as introduced in version 2.10.0 was partially broken, causing premature abortion of charmap iteration for many fonts.

- If `FT_Set_Named_Instance' was called with the same arguments twice in a row, the function returned an incorrect error code the second time.

- Direct rendering using FT_RASTER_FLAG_DIRECT crashed (bug introduced in version 2.10.0).

- Increased precision while computing OpenType font variation instances.

- The flattening algorithm of cubic Bezier curves was slightly changed to make it faster. This can cause very subtle rendering changes, which aren't noticeable by the eye, however.

- The auto-hinter now disables hinting if there are blue zones defined for a `style' (i.e., a certain combination of a script and its related typographic features) but the font doesn't contain any characters needed to set up at least one blue zone.

Add tarball signatures and freetype2.keyring

Update to version 2.10.0

- A bunch of new functions has been added to access and process COLR/CPAL data of OpenType fonts with color-layered glyphs.

- As a GSoC 2018 project, Nikhil Ramakrishnan completely overhauled and modernized the API reference.

- The logic for computing the global ascender, descender, and height of OpenType fonts has been slightly adjusted for consistency.

- `TT_Set_MM_Blend' could fail if called repeatedly with the same arguments.

- The precision of handling deltas in Variation Fonts has been increased.The problem did only show up with multidimensional designspaces.

- New function `FT_Library_SetLcdGeometry' to set up the geometry of LCD subpixels.

- FreeType now uses the `defaultChar' property of PCF fonts to set the glyph for the undefined character at glyph index 0 (as FreeType already does for all other supported font formats). As a consequence, the order of glyphs of a PCF font if accessed with FreeType can be different now compared to previous versions. This change doesn't affect PCF font access with cmaps.

- `FT_Select_Charmap' has been changed to allow parameter value `FT_ENCODING_NONE', which is valid for BDF, PCF, and Windows FNT formats to access built-in cmaps that don't have a predefined `FT_Encoding' value.

- A previously reserved field in the `FT_GlyphSlotRec' structure now holds the glyph index.

- The usual round of fuzzer bug fixes to better reject malformed fonts.

- `FT_Outline_New_Internal' and `FT_Outline_Done_Internal' have been removed.These two functions were public by oversight only and were never documented.

- A new function `FT_Error_String' returns descriptions of error codes if configuration macro FT_CONFIG_OPTION_ERROR_STRINGS is defined.

- `FT_Set_MM_WeightVector' and `FT_Get_MM_WeightVector' are new functions limited to Adobe MultiMaster fonts to directly set and get the weight vector.

Enable subpixel rendering with infinality config :

Re-enable freetype-config, there is just too many fallouts.

Update to version 2.9.1

- Type 1 fonts containing flex features were not rendered correctly (bug introduced in version 2.9).

- CVE-2018-6942: Older FreeType versions can crash with certain malformed variation fonts.

- Bug fix: Multiple calls to `FT_Get_MM_Var' returned garbage.

- Emboldening of bitmaps didn't work correctly sometimes, showing various artifacts (bug introduced in version 2.8.1).

- The auto-hinter script ranges have been updated for Unicode 11. No support for new scripts have been added, however, with the exception of Georgian Mtavruli.

freetype-config is now deprecated by upstream and not enabled by default.

Update to version 2.10.1

- The `ftmulti' demo program now supports multiple hidden axes with the same name tag.

- `ftview', `ftstring', and `ftgrid' got a `-k' command line option to emulate a sequence of keystrokes at start-up.

- `ftview', `ftstring', and `ftgrid' now support screen dumping to a PNG file.

- The bytecode debugger, `ttdebug', now supports variation TrueType fonts; a variation font instance can be selected with the new `-d' command line option.

Add tarball signatures and freetype2.keyring

Update to version 2.10.0

- The `ftdump' demo program has new options `-c' and `-C' to display charmaps in compact and detailed format, respectively. Option `-V' has been removed.

- The `ftview', `ftstring', and `ftgrid' demo programs use a new command line option `-d' to specify the program window's width, height, and color depth.

- The `ftview' demo program now displays red boxes for zero-width glyphs.

- `ftglyph' has limited support to display fonts with color-layered glyphs.This will be improved later on.

- `ftgrid' can now display bitmap fonts also.

- The `ttdebug' demo program has a new option `-f' to select a member of a TrueType collection (TTC).

- Other various improvements to the demo programs.

Remove 'Supplements: fonts-config' to avoid accidentally pulling in Qt dependencies on some non-Qt based desktops.(bsc#1091109) fonts-config is fundamental but ft2demos seldom installs by end users. only fonts-config maintainers/debuggers may use ft2demos along to debug some issues.

Update to version 2.9.1

- No changelog upstream.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Module for Basesystem 15-SP1 :

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP1-2020-1353=1

Plugin Details

Severity: Medium

ID: 136800

File Name: suse_SU-2020-1353-1.nasl

Version: 1.3

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 5/22/2020

Updated: 12/30/2020

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2018-6942

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:libfreetype6-32bit-debuginfo, p-cpe:/a:novell:suse_linux:freetype2-devel, p-cpe:/a:novell:suse_linux:libfreetype6, p-cpe:/a:novell:suse_linux:freetype2-debugsource, p-cpe:/a:novell:suse_linux:libfreetype6-debuginfo, cpe:/o:novell:suse_linux:15

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 5/20/2020

Vulnerability Publication Date: 2/13/2018

Reference Information

CVE: CVE-2018-6942

Detections

Analytics