Mozilla developers reported memory safety bugs present in Firefox 71 and Firefox ESR 68.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
CVSS Score
8.8
EPSS Score
0.018
Published
2020-01-08
The plain text serializer used a fixed-size array for the number of <ol> elements it could process; however it was possible to overflow the static-sized array leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.
CVSS Score
8.8
EPSS Score
0.017
Published
2020-01-08
When using nested workers, a use-after-free could occur during worker destruction. This resulted in a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.
CVSS Score
8.8
EPSS Score
0.009
Published
2020-01-08
When running, the updater service wrote status and log files to an unrestricted location; potentially allowing an unprivileged process to locate and exploit a vulnerability in file handling in the updater service. *Note: This attack requires local system access and only affects Windows. Other operating systems are not affected.*. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.
CVSS Score
7.8
EPSS Score
0.001
Published
2020-01-08
Under certain conditions, when checking the Resist Fingerprinting preference during device orientation checks, a race condition could have caused a use-after-free and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.
CVSS Score
7.5
EPSS Score
0.01
Published
2020-01-08
Under certain conditions, when retrieving a document from a DocShell in the antitracking code, a race condition could cause a use-after-free condition and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.
CVSS Score
7.5
EPSS Score
0.01
Published
2020-01-08
GNU LibreDWG 0.9.3.2564 has a heap-based buffer over-read in read_pages_map in decode_r2007.c.
CVSS Score
8.8
EPSS Score
0.006
Published
2020-01-08
GNU LibreDWG 0.9.3.2564 has an attempted excessive memory allocation in read_sections_map in decode_r2007.c.
CVSS Score
6.5
EPSS Score
0.005
Published
2020-01-08
GNU LibreDWG 0.9.3.2564 has a NULL pointer dereference in get_next_owned_entity in dwg.c.
CVSS Score
6.5
EPSS Score
0.006
Published
2020-01-08
GNU LibreDWG 0.9.3.2564 has a heap-based buffer over-read in copy_compressed_bytes in decode_r2007.c.
CVSS Score
8.1
EPSS Score
0.006
Published
2020-01-08