22 May 2020
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.1819 SUSE-SU-2020:1353-1 Security update for freetype2 22 May 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: freetype2 Publisher: SUSE Operating System: SUSE Impact/Access: Denial of Service -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2018-6942 Reference: ESB-2018.0466 Original Bulletin: https://www.suse.com/support/update/announcement/2020/suse-su-20201353-1 - --------------------------BEGIN INCLUDED TEXT-------------------- SUSE Security Update: Security update for freetype2 ______________________________________________________________________________ Announcement ID: SUSE-SU-2020:1353-1 Rating: moderate References: #1079603 #1091109 Cross-References: CVE-2018-6942 Affected Products: SUSE Linux Enterprise Module for Basesystem 15-SP1 ______________________________________________________________________________ An update that solves one vulnerability and has one errata is now available. Description: This update for freetype2 to version 2.10.1 fixes the following issues: Security issue fixed: o CVE-2018-6942: Fixed a NULL pointer dereference within ttinerp.c (bsc# 1079603). Non-security issues fixed: o 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. o Add tarball signatures and freetype2.keyring o 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. o Enable subpixel rendering with infinality config: o Re-enable freetype-config, there is just too many fallouts. o 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. o freetype-config is now deprecated by upstream and not enabled by default. o 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. o Add tarball signatures and freetype2.keyring o 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. o 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. o Update to version 2.9.1 * No changelog upstream. Patch Instructions: 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: o SUSE Linux Enterprise Module for Basesystem 15-SP1: zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP1-2020-1353=1 Package List: o SUSE Linux Enterprise Module for Basesystem 15-SP1 (aarch64 ppc64le s390x x86_64): freetype2-debugsource-2.10.1-4.3.1 freetype2-devel-2.10.1-4.3.1 libfreetype6-2.10.1-4.3.1 libfreetype6-debuginfo-2.10.1-4.3.1 o SUSE Linux Enterprise Module for Basesystem 15-SP1 (x86_64): libfreetype6-32bit-2.10.1-4.3.1 libfreetype6-32bit-debuginfo-2.10.1-4.3.1 References: o https://www.suse.com/security/cve/CVE-2018-6942.html o https://bugzilla.suse.com/1079603 o https://bugzilla.suse.com/1091109 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to email@example.com and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: firstname.lastname@example.org Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXsc09+NLKJtyKPYoAQgoNRAAmtnXvC/5eVIPiltjdb/iQUW1w0o0oCYd fH317OO28e7APCoddsQF0UMBBTxNPUG+eqfP4PKYKsS7xjIuN9ucEPB68pEXgQ1W +c/pWatPSaKN1ZvxINt9hoUhqV34JlkGlQWCBkUIe6ow9o5n/3yonjaKMho+plYd ftpFPFJtVceS2ZPwBaRfBJhTfMeNDe7aw24P+zO+09nYu9LfLbRLTy7ipe7nzJNZ ZMINubIRdfG7YwwCvUHRJ6hpy0wRZp3ZwQ/wC6o5IGXLNdnL5BhqYluL0c8bWrym K4OEFABGF/JoBFfp7CUqa3u/7ippOt29FHMo3fFFrn5qPj3A11bhQX1LLPpE420s onasKbiETwQSn/pzos1G/4NBzSaS4ZLQPNwyJ0pOkrlT5V6zC3tpW/ZZsJY7pS7g 21iJYvRGcaqqO+PMGP1sTZR3QFOlt5qnZVIO66uVtAi3ezgPeWaA7Gy9n7/XRXzq WQnNIK72Y8q95aW9fSw+Z0H5W2A5WoOEVgDZUfuGwkEyxJiLh/1UB5cC4Ejm673P yeEcZP+5SuWej4JGKhPwS7k9Qn78j3HwjiCID0+gPWEwVx6LuG2wCQvAbYDV2UXz ACxNhFpvuCztCCsaq6RHjsYKUIvewdTyMjUHVJcy7/bh51oaS8//nhhbD648xeJk Ybmuo4B8Sag= =20sm -----END PGP SIGNATURE-----