CVE-2020-26235 – time

Package

Manager: cargo
Name: time
Vulnerable Version: >=0.1.0 <0.2.23 || >=0.2.7 <0.2.23

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00784 pctl0.72879

Details

Segmentation fault in time ### 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. The affected functions from time 0.2.7 through 0.2.22 are: - `time::UtcOffset::local_offset_at` - `time::UtcOffset::try_local_offset_at` - `time::UtcOffset::current_local_offset` - `time::UtcOffset::try_current_local_offset` - `time::OffsetDateTime::now_local` - `time::OffsetDateTime::try_now_local` The affected functions in time 0.1 (all versions) are: - `at` - `at_utc` - `now` Non-Unix targets (including Windows and wasm) are unaffected. ### Patches In some versions of `time`, the internal method that determines the local offset has been modified to always return `None` on the affected operating systems. This has the effect of returning an `Err` on the `try_*` methods and `UTC` on the non-`try_*` methods. In later versions, `time` will attempt to determine the number of threads running in the process. If the process is single-threaded, the call will proceed as its safety invariant is upheld. Users and library authors with time in their dependency tree must perform `cargo update`, which will pull in the updated, unaffected code. Users of time 0.1 do not have a patch and must upgrade to an unaffected version: time 0.2.23 or greater or the 0.3 series. ### Workarounds Library authors must ensure that the program only has one running thread at the time of calling any affected method. Binary authors may do the same and/or ensure that no other thread is actively mutating the environment. ### References [time-rs/time#293](https://github.com/time-rs/time/issues/293).

Metadata

Created: 2021-08-25T20:56:46Z
Modified: 2024-06-10T18:40:10Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-wcg3-cvx6-7396/GHSA-wcg3-cvx6-7396.json
CWE IDs: ["CWE-476"]
Alternative ID: GHSA-wcg3-cvx6-7396
Finding: F002
Auto approve: 1