Quantum Secular Labs / Blog / Advisories
CVE-2017-7774: Mozilla Firefox: Memory corruption
CVE-2017-7774 is rated critical with a CVSS v3.0 base score of 9.1 and affects Mozilla Firefox. Per its scoring, it can be exploited over the network, without authentication, without any user interaction.
Vulnerability description
Out-of-bounds read in Graphite2 Library in Firefox before 54 in graphite2::Silf::readGraphite function.
Severity breakdown
CVSS v3.0 9.1: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
- Attack complexity: Low. No special conditions; the attack can be repeated reliably.
- Privileges required: None. No account or prior access is needed.
- User interaction: None. No action from any user is needed.
- Scope: Unchanged. Impact stays within the vulnerable component.
- Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
- Integrity impact: None. No loss of integrity.
- Availability impact: High. Total loss of availability; the component can be shut down.
Underlying weakness
CWE-125: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
Affected products
- Mozilla Firefox: before 54.0
- Sil Graphite2: before 1.3.10