This project contains known security vulnerabilities. Find detailed information at the bottom.

Crate serde_with

Dependencies

(9 total, 1 insecure)

CrateRequiredLatestStatus
 base64^0.13.00.13.0up to date
 chrono ⚠️^0.4.10.4.19insecure
 doc-comment^0.3.30.3.3up to date
 hex^0.4.20.4.3up to date
 indexmap^1.81.8.1up to date
 rustversion^1.0.01.0.6up to date
 serde^1.0.1221.0.137up to date
 serde_json^1.0.11.0.81up to date
 serde_with_macros^1.5.21.5.2up to date

Dev dependencies

(13 total, 1 outdated, 1 possibly insecure)

CrateRequiredLatestStatus
 expect-test^1.0.01.2.2up to date
 fnv^1.0.61.0.7up to date
 glob^0.3.00.3.0up to date
 mime^0.3.160.3.16up to date
 pretty_assertions^1.0.01.2.1up to date
 regex ⚠️^1.3.91.5.5maybe insecure
 rmp-serde^0.15.51.1.0out of date
 ron^0.70.7.0up to date
 serde-xml-rs^0.5.00.5.1up to date
 serde_json^1.0.251.0.81up to date
 serde_test^1.0.1241.0.137up to date
 serde_yaml^0.8.210.8.24up to date
 version-sync^0.9.10.9.4up to date

Security Vulnerabilities

chrono: Potential segfault in `localtime_r` invocations

RUSTSEC-2020-0159

Impact

Unix-like operating systems may segfault due to dereferencing a dangling pointer in specific circumstances. This requires an environment variable to be set in a different thread than the affected functions. This may occur without the user's knowledge, notably in a third-party library.

Workarounds

No workarounds are known.

References

regex: Regexes with large repetitions on empty sub-expressions take a very long time to parse

RUSTSEC-2022-0013

The Rust Security Response WG was notified that the regex crate did not properly limit the complexity of the regular expressions (regex) it parses. An attacker could use this security issue to perform a denial of service, by sending a specially crafted regex to a service accepting untrusted regexes. No known vulnerability is present when parsing untrusted input with trusted regexes.

This issue has been assigned CVE-2022-24713. The severity of this vulnerability is "high" when the regex crate is used to parse untrusted regexes. Other uses of the regex crate are not affected by this vulnerability.

Overview

The regex crate features built-in mitigations to prevent denial of service attacks caused by untrusted regexes, or untrusted input matched by trusted regexes. Those (tunable) mitigations already provide sane defaults to prevent attacks. This guarantee is documented and it's considered part of the crate's API.

Unfortunately a bug was discovered in the mitigations designed to prevent untrusted regexes to take an arbitrary amount of time during parsing, and it's possible to craft regexes that bypass such mitigations. This makes it possible to perform denial of service attacks by sending specially crafted regexes to services accepting user-controlled, untrusted regexes.

Affected versions

All versions of the regex crate before or equal to 1.5.4 are affected by this issue. The fix is include starting from regex 1.5.5.

Mitigations

We recommend everyone accepting user-controlled regexes to upgrade immediately to the latest version of the regex crate.

Unfortunately there is no fixed set of problematic regexes, as there are practically infinite regexes that could be crafted to exploit this vulnerability. Because of this, we do not recommend denying known problematic regexes.

Acknowledgements

We want to thank Addison Crump for responsibly disclosing this to us according to the Rust security policy, and for helping review the fix.

We also want to thank Andrew Gallant for developing the fix, and Pietro Albini for coordinating the disclosure and writing this advisory.