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Update RUSTEC-2020-0071 (#1078)

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This includes the affected functions in time 0.1 and rewords a few
things for clarity.
This commit is contained in:
Jacob Pratt
2021-10-17 00:31:32 -04:00
committed by GitHub
parent f494f83f8e
commit e7d342f190
1 changed files with 19 additions and 10 deletions
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29
crates/time/RUSTSEC-2020-0071.md
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@@ -24,6 +24,8 @@ os = [
"freebsd", "freebsd",
] ]
[affected.functions] [affected.functions]
"time::at" = ["^0.1"]
"time::at_utc" = ["^0.1"]
"time::UtcOffset::local_offset_at" = ["< 0.2.23"] "time::UtcOffset::local_offset_at" = ["< 0.2.23"]
"time::UtcOffset::try_local_offset_at" = ["< 0.2.23"] "time::UtcOffset::try_local_offset_at" = ["< 0.2.23"]
"time::UtcOffset::current_local_offset" = ["< 0.2.23"] "time::UtcOffset::current_local_offset" = ["< 0.2.23"]
@@ -33,16 +35,16 @@ os = [
[versions] [versions]
patched = [">= 0.2.23"] patched = [">= 0.2.23"]
unaffected = ["< 0.2.7"] unaffected = ["=0.2.0", "=0.2.1", "=0.2.2", "=0.2.3", "=0.2.4", "=0.2.5", "=0.2.6"]
``` ```
# Potential segfault in the time crate # Potential segfault in the time crate
## Impact ### Impact
Unix-like operating systems may segfault due to dereferencing a dangling pointer in specific circumstances. This requires the user to set any environment variable in a different thread than the affected functions. 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 are: The affected functions from time 0.2.7 through 0.2.22 are:
- `time::UtcOffset::local_offset_at` - `time::UtcOffset::local_offset_at`
- `time::UtcOffset::try_local_offset_at` - `time::UtcOffset::try_local_offset_at`
@@ -51,18 +53,25 @@ The affected functions are:
- `time::OffsetDateTime::now_local` - `time::OffsetDateTime::now_local`
- `time::OffsetDateTime::try_now_local` - `time::OffsetDateTime::try_now_local`
Non-Unix targets are unaffected. This includes Windows and wasm. The affected functions in time 0.1 (all versions) are:
## Patches - `at`
- `at_utc`
Non-Unix targets (including Windows and wasm) are unaffected.
### Patches
Pending a proper fix, 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. Pending a proper fix, 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.
Users and library authors with time in their dependency tree should perform `cargo update`, which will pull in a the updated, unaffected code. Users and library authors with time in their dependency tree should perform `cargo update`, which will pull in the updated, unaffected code.
## Workarounds Users of time 0.1 do not have a patch and should upgrade to an unaffected version: time 0.2.23 or greater or the 0.3. series.
### Workarounds
No workarounds are known. No workarounds are known.
## References ### References
#293 time-rs/time#293