SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-5129

A lack of parameter validation on IPC messages results in a potential out-of-bounds write through malformed IPC messages.

HIGH 8.6EPSS 3.01%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (3.01%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A lack of parameter validation on IPC messages results in a potential out-of-bounds write through malformed IPC messages. This can potentially allow for sandbox escape through memory corruption in the parent process. This vulnerability affects Thunderbird < 52.7, Firefox ESR < 52.7, and Firefox < 59.

CVSS 3.0
8.6 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
EPSS
3.01% probability · 87th percentile
CISA KEV
Not listed
Weakness
CWE-787
Affected
debian/debian linux · mozilla/firefox · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server eus · redhat/enterprise linux workstation · canonical/ubuntu linux · mozilla/thunderbird
Source
security@mozilla.org

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.