Quantum Secular Labs / Blog / Advisories
CVE-2018-5885: While loading dynamic fonts, a buffer overflow may occur if the number of segments in the font file is out…
CVE-2018-5885 is rated critical with a CVSS v3.0 base score of 9.8 and NVD lists 12 affected products, including Qualcomm Msm8909w Firmware. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.
Vulnerability description
While loading dynamic fonts, a buffer overflow may occur if the number of segments in the font file is out of range in Snapdragon Mobile and Snapdragon Wear.
Severity breakdown
CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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: High. Total loss of integrity; data or system state can be fully modified.
- Availability impact: High. Total loss of availability; the component can be shut down.
Underlying weakness
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.
Affected products
- Qualcomm Msm8909w Firmware: all versions listed by NVD
- Qualcomm Msm8996au Firmware: all versions listed by NVD
- Qualcomm SD 210 Firmware: all versions listed by NVD
- Qualcomm SD 212 Firmware: all versions listed by NVD
- Qualcomm SD 205 Firmware: all versions listed by NVD
- Qualcomm SD 450 Firmware: all versions listed by NVD
- Qualcomm SD 615 Firmware: all versions listed by NVD
- Qualcomm SD 616 Firmware: all versions listed by NVD
- Qualcomm SD 415 Firmware: all versions listed by NVD
- Qualcomm SD 625 Firmware: all versions listed by NVD
- Qualcomm SD 820 Firmware: all versions listed by NVD
- Qualcomm SD 845 Firmware: all versions listed by NVD