GHSA-6wmf-3r64-vcwv
UnknownSummary
The vulnerability in the Crass library causes unbounded processing of scientific notation in CSS values before clamping the result to Float::MAX. An attacker can send a small crafted CSS string that forces excessive CPU and memory consumption.
Risk Assessment
The organization is at risk of a DoS (denial of service) attack by sending malicious CSS to applications using Crass, potentially causing server overload and service disruption.
Recommendation
It is recommended to immediately update the Crass library to the latest patched version. If an update is not possible, restrict processing of CSS from untrusted sources.
Other vulnerabilities in Crass
See all- GHSA-6jxj-px6v-747wUnknown
Crass recursively parses CSS simple blocks and functions without a depth guard, allowing an attacker to cause stack overflow or excessive memory usage via deeply nested blocks.
- GHSA-8vfg-2r28-hvhjUnknown
A vulnerability in the Crass library causes excessive CPU consumption when parsing input containing non-ASCII characters. Inefficient tracking of multi-byte character positions leads to superlinear parsing time.
- GHSA-wwpr-jff3-395cUnknown
A vulnerability in the Crass library allows a DoS attack by providing a stylesheet with a very large number of adjacent CSS comments when the :preserve_comments option is disabled (default behavior). This causes excessive recursion and potential system resource exhaustion.
Original NVD description (English source)
## Impact Crass converts CSS scientific notation number values with unbounded exponentiation before it clamps the result to Float::MAX. Applications that use Crass to parse attacker-controlled CSS strings can be forced to spend disproportionate CPU and memory parsing a tiny input, possibly resultin