CVE-2021-29932
Uncontrolled Resource Consumption in parse_duration
An issue was discovered in the parse_duration crate through 2021-03-18 for Rust. It allows attackers to cause a denial of service (CPU and memory consumption) via a duration string with a large exponent.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in the parse_duration crate through 2021-03-18 for Rust. It allows attackers to cause a denial of service (CPU and memory consumption) via a duration string with a large exponent.
- Record
CVE-2021-29932- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-770
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in the parse_duration crate through 2021-03-18 for Rust. It allows attackers to cause a denial of service (CPU and memory consumption) via a duration string with a large exponent.
- Record
CVE-2021-29932- Updated
- 2026-11-02
EUVDEUVD-2021-1847 No score
An issue was discovered in the parse_duration crate through 2021-03-18 for Rust. It allows attackers to cause a denial of service (CPU and memory consumption) via a duration string with a large exponent.
- Record
EUVD-2021-1847- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qpgv-g792-wh6x
Uncontrolled Resource Consumption in parse_duration
An issue was discovered in the parse_duration crate through 2021-03-18 for Rust. It allows attackers to cause a denial of service (CPU and memory consumption) via a duration string with a large exponent.
- Record
GHSA-qpgv-g792-wh6x- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVGHSA-qpgv-g792-wh6x
Uncontrolled Resource Consumption in parse_duration
An issue was discovered in the parse_duration crate through 2021-03-18 for Rust. It allows attackers to cause a denial of service (CPU and memory consumption) via a duration string with a large exponent.
- Record
GHSA-qpgv-g792-wh6x- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVRUSTSEC-2021-0041
Denial of service through parsing payloads with too big exponent
The parse_duration::parse function allows for parsing duration strings with exponents like 5e5s where under the hood, the BigInt type along with the pow function are used for such payloads. Passing an arbitrarily big exponent makes the parse_duration::parse function to process the payload for a very long time taking up CPU and memory.
This allows an attacker to cause a DoS if the parse_duration::parse function is used to process untrusted input.
- Record
RUSTSEC-2021-0041- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
parse_durationcrates.io |
through 2.1.1 | None known |
parse_durationcrates.io |
0.0.0-0 and later | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-29932 is a high vulnerability (CVSS 7.5) in Parse Duration Project Duration, published March 18, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.04%, the 64th percentile. No source names a fixed version.