Sicherheitslücken in freetype

Freetype: freetype: denial of service via repeated subroutine allocations in cid font loader

A flaw was found in FreeType, specifically within its CID font loader. A remote attacker could exploit this vulnerability by tricking a user into opening content that embeds or references a specially crafted CID-keyed font. This crafted font can cause repeated allocations and decryptions of subroutine data across multiple font dictionaries, leading to excessive memory and CPU consumption. This can result in a denial of service (DoS) for the application or service processing the font, potentially causing it to hang or terminate.

freetype - security update

freetype - security update

• Auf 2.12.1+dfsg-5+deb12u4 aktualisieren

CVE-2025-27363

An out of bounds write exists in FreeType versions 2.13.0 and below (newer versions of FreeType are not vulnerable) when attempting to parse font subglyph structures related to TrueType GX and variable font files. The vulnerable code assigns a signed short value to an unsigned long and then adds a static value causing it to wrap around and allocate too small of a heap buffer. The code then writes up to 6 signed long integers out of bounds relative to this buffer. This may result in arbitrary code execution. This vulnerability may have been exploited in the wild.

• Auf 2.12.1+dfsg-5+deb12u4 aktualisieren

CVE-2022-31782

ftbench.c in FreeType Demo Programs through 2.12.1 has a heap-based buffer overflow.

• Auf 2.12.1+dfsg-3 aktualisieren

CVE-2022-27406

FreeType commit 22a0cccb4d9d002f33c1ba7a4b36812c7d4f46b5 was discovered to contain a segmentation violation via the function FT_Request_Size.

• Auf 2.11.1+dfsg-2 aktualisieren

CVE-2022-27405

FreeType commit 53dfdcd8198d2b3201a23c4bad9190519ba918db was discovered to contain a segmentation violation via the function FNT_Size_Request.

• Auf 2.11.1+dfsg-2 aktualisieren

CVE-2022-27404

FreeType commit 1e2eb65048f75c64b68708efed6ce904c31f3b2f was discovered to contain a heap buffer overflow via the function sfnt_init_face.

• Auf 2.11.1+dfsg-2 aktualisieren

CVE-2020-15999

Heap buffer overflow in Freetype in Google Chrome prior to 86.0.4240.111 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

• Auf 2.10.2+dfsg-4 aktualisieren

CVE-2015-9383

FreeType before 2.6.2 has a heap-based buffer over-read in tt_cmap14_validate in sfnt/ttcmap.c.

• Auf 2.6.3-1 aktualisieren

CVE-2015-9382

FreeType before 2.6.1 has a buffer over-read in skip_comment in psaux/psobjs.c because ps_parser_skip_PS_token is mishandled in an FT_New_Memory_Face operation.

• Auf 2.6.1-0.1 aktualisieren

CVE-2015-9381

FreeType before 2.6.1 has a heap-based buffer over-read in T1_Get_Private_Dict in type1/t1parse.c.

• Auf 2.6.1-0.1 aktualisieren

CVE-2015-9290

In FreeType before 2.6.1, a buffer over-read occurs in type1/t1parse.c on function T1_Get_Private_Dict where there is no check that the new values of cur and limit are sensible before going to Again.

• Auf 2.6.1-0.1 aktualisieren

CVE-2018-6942

An issue was discovered in FreeType 2 through 2.9. A NULL pointer dereference in the Ins_GETVARIATION() function within ttinterp.c could lead to DoS via a crafted font file.

• Auf 2.9.1-3 aktualisieren

CVE-2017-8287

FreeType 2 before 2017-03-26 has an out-of-bounds write caused by a heap-based buffer overflow related to the t1_builder_close_contour function in psaux/psobjs.c.

• Auf 2.6.3-3.2 aktualisieren

CVE-2017-8105

FreeType 2 before 2017-03-24 has an out-of-bounds write caused by a heap-based buffer overflow related to the t1_decoder_parse_charstrings function in psaux/t1decode.c.

• Auf 2.6.3-3.2 aktualisieren

CVE-2016-10244

The parse_charstrings function in type1/t1load.c in FreeType 2 before 2.7 does not ensure that a font contains a glyph name, which allows remote attackers to cause a denial of service (heap-based buffer over-read) or possibly have unspecified other impact via a crafted file.

• Auf 2.6.3-3.1 aktualisieren

CVE-2014-9747

The t42_parse_encoding function in type42/t42parse.c in FreeType before 2.5.4 does not properly update the current position for immediates-only mode, which allows remote attackers to cause a denial of service (infinite loop) via a Type42 font.

• Auf 2.6-1 aktualisieren

CVE-2014-9746

The (1) t1_parse_font_matrix function in type1/t1load.c, (2) cid_parse_font_matrix function in cid/cidload.c, (3) t42_parse_font_matrix function in type42/t42parse.c, and (4) ps_parser_load_field function in psaux/psobjs.c in FreeType before 2.5.4 do not check return values, which allows remote attackers to cause a denial of service (uninitialized memory access and application crash) or possibly have unspecified other impact via a crafted font.

• Auf 2.6-1 aktualisieren

CVE-2014-9745

The parse_encoding function in type1/t1load.c in FreeType before 2.5.3 allows remote attackers to cause a denial of service (infinite loop) via a "broken number-with-base" in a Postscript stream, as demonstrated by 8#garbage.

• Auf 2.6-1 aktualisieren

CVE-2014-9675

bdf/bdflib.c in FreeType before 2.5.4 identifies property names by only verifying that an initial substring is present, which allows remote attackers to discover heap pointer values and bypass the ASLR protection mechanism via a crafted BDF font.

• Auf 2.5.2-3 aktualisieren