RUSTSEC-2019-0007
Processing of maliciously crafted length fields causes memory allocation SIGABRTs
- Reported
- Issued
- Package
- asn1_der (crates.io)
- Type
- Vulnerability
- Keywords
- #dos
- Aliases
- References
- CVSS Score
- 7.5 HIGH
- CVSS Details
-
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
- CVSS Vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Patched
-
>=0.6.2
Description
Affected versions of this crate tried to preallocate a vector for an arbitrary amount of bytes announced by the ASN.1-DER length field without further checks.
This allows an attacker to trigger a SIGABRT by creating length fields that announce more bytes than the allocator can provide.
The flaw was corrected by not preallocating memory.
Advisory available under CC0-1.0 license.