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Fencer Vulns
high 8.1

CVE-2019-12083 json

The Rust Programming Language Standard Library 1.34.x before 1.34.2 contains a stabilized method which, if overridden, can violate Rust's s…

published 2019-05-13 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-3736

cvss
8.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

The Rust Programming Language Standard Library 1.34.x before 1.34.2 contains a stabilized method which, if overridden, can violate Rust's safety guarantees and cause memory unsafety. If the `Error::type_id` method is overridden then any type can be safely cast to any other type, causing memory safety vulnerabilities in safe code (e.g., out-of-bounds write or read). Code that does not manually implement Error::type_id is unaffected.

Patch / fix

  • rust-lang rust 1.34.2
  • rust SLE Module for Development Tools 15 SP1 1.36.0-4.1
  • rust SLE Module for Development Tools 15 1.36.0-3.21.1

suse advisories SUSE-SU-2019:2755-1SUSE-SU-2019:2439-1

  • rust1.53 openSUSE Tumbleweed 1.53.0-2.5
  • rust openSUSE Leap 15.1 1.36.0-lp151.5.8.1
  • rust-cbindgen openSUSE Leap 15.1 0.8.7-lp151.5.2
  • rust openSUSE Leap 15.1 1.36.0-lp151.5.4.2
  • rust openSUSE Leap 15.1 1.36.0-lp151.5.4.1
  • rust-cbindgen openSUSE Leap 15.1 0.8.7-lp151.2.2

opensuse advisories openSUSE-SU-2024:11360-1openSUSE-SU-2019:2294-1openSUSE-SU-2019:2244-1openSUSE-SU-2019:2203-1

  • rust Alpine 3.24, Alpine 3.23, Alpine 3.22 +11 more 1.34.2-r0
  • chromium-rust Alpine 3.24 1.34.2-r0

alpine advisories ALPINE-CVE-2019-12083

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-12083 updated cvss 4.4

rust: overriden stabilized method `Error::type_id` can violate Rust's safety guarantees leading to out-of-bounds write or read

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.22% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • blog.rust-lang.org https://blog.rust-lang.org/2019/05/13/Security-advisory.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.