Vulnerabilities > CVE-2019-11925 - Out-of-bounds Read vulnerability in Facebook Hhvm
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
Insufficient boundary checks when processing the JPEG APP12 block marker in the GD extension could allow access to out-of-bounds memory via a maliciously constructed invalid JPEG input. This issue affects HHVM versions prior to 3.30.9, all versions between 4.0.0 and 4.8.3, all versions between 4.9.0 and 4.15.2, and versions 4.16.0 to 4.16.3, 4.17.0 to 4.17.2, 4.18.0 to 4.18.1, 4.19.0, 4.20.0 to 4.20.1.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Overread Buffers An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.
The Hacker News
| id | THN:EC12F96A9F7611BE626CE11B2EB41551 |
| last seen | 2019-09-09 |
| modified | 2019-09-09 |
| published | 2019-09-09 |
| reporter | The Hacker News |
| source | https://thehackernews.com/2019/09/facebook-hhvm-vulnerability.html |
| title | Facebook Patches "Memory Disclosure Using JPEG Images" Flaws in HHVM Servers |
References
- https://github.com/facebook/hhvm/commit/f1cd34e63c2a0d9702be3d41462db7bfd0ae7da3
- https://github.com/facebook/hhvm/commit/f1cd34e63c2a0d9702be3d41462db7bfd0ae7da3
- https://hhvm.com/blog/2019/09/03/security-update.html
- https://hhvm.com/blog/2019/09/03/security-update.html
- https://www.facebook.com/security/advisories/cve-2019-11925
- https://www.facebook.com/security/advisories/cve-2019-11925