Actively exploited in the wild
Google Chrome FreeType Heap Buffer Overflow Vulnerability
Google - Chrome FreeType · Listed in the CISA KEV since 2021-11-03. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2020-15999
CriticalCVSS 9.6KEVSummary
Heap buffer overflow in FreeType in Google Chrome prior to 86.0.4240.111. A remote attacker could potentially exploit heap corruption via a crafted HTML page.
Risk Assessment
A vulnerability in a widely used font rendering library may lead to arbitrary code execution in the browser context, posing a serious threat to user workstations.
Recommendation
Update Google Chrome to version 86.0.4240.111 or later and update the FreeType library on systems that use it. Prioritize updates on internet-facing workstations.
Other vulnerabilities in FreeType
See all- CVE-2014-9747High
The t42_parse_encoding function in FreeType before version 2.5.4 does not properly update the current position for immediates-only mode, allowing remote attackers to cause a denial of service (infinite loop) via a Type42 font.
- CVE-2014-9674High
The Mac_Read_POST_Resource function in FreeType before version 2.5.4 does not validate length values, which can lead to integer overflow and heap-based buffer overflow, allowing remote attackers to cause a denial of service.
- CVE-2014-9668High
The woff_open_font function in FreeType before version 2.5.4 performs offset and length calculations without restricting length values, which can lead to integer overflow and heap-based buffer overflow.
- CVE-2014-9665High
The Load_SBit_Png function in FreeType before version 2.5.4 does not restrict the rows and pitch values of PNG data, allowing remote attackers to cause a denial of service (integer overflow and heap-based buffer overflow) by embedding a PNG file in a .ttf font file.
- CVE-2014-9663High
The tt_cmap4_validate function in FreeType before version 2.5.4 validates a certain length field before that field's value is completely calculated, allowing remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a crafted cmap SFNT table.
- CVE-2014-9662High
In FreeType versions before 2.5.4, return values of point-allocation functions are not validated, which can lead to a heap-based buffer overflow. Remote attackers may exploit this to cause a denial of service or possibly have unspecified other impact via a crafted OTF font.
- CVE-2014-9661High
In FreeType before version 2.5.4, the type42/t42parse.c file does not consider that scanning can be incomplete without triggering an error, allowing remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via a crafted Type42 font.
- CVE-2014-9660High
The _bdf_parse_glyphs function in FreeType before version 2.5.4 does not properly handle a missing ENDCHAR record, which can lead to denial of service (NULL pointer dereference) or other unspecified impacts via a crafted BDF font.
- CVE-2014-9659High
The CFF CharString interpreter in FreeType before version 2.5.4 has a vulnerability that allows remote attackers to execute arbitrary code or cause a denial of service (stack-based buffer overflow) via a crafted OpenType font.
- CVE-2014-9658High
The tt_face_load_kern function in FreeType before version 2.5.4 enforces an incorrect minimum table length, allowing remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a crafted TrueType font.
Original NVD description (English source)
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.