6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.136 Low
EPSS
Percentile
95.6%
The hb_buffer_ensure function in hb-buffer.c in HarfBuzz, as used in Pango
1.28.3, Firefox, and other products, does not verify that memory
reallocations succeed, which allows remote attackers to cause a denial of
service (NULL pointer dereference and application crash) or possibly
execute arbitrary code via crafted OpenType font data that triggers use of
an incorrect index.
Author | Note |
---|---|
mdeslaur | hardy’s pango seems to check reallocs correctly in equivalent code |