stdweb is unmaintained

| Details | | | ------------------- | ---------------------------------------------- | | Status | unmaintained | | Package | stdweb | | Version | 0.4.20 | | URL | https://github.com/koute/stdweb/issues/403 | | Date | 2020-05-04 |

The author of the stdweb crate is unresponsive.

Maintained alternatives:

• wasm-bindgen
• js-sys
• web-sys

See advisory page for additional details.

spirv_headers is unmaintained, use spirv instead

| Details | | | ------------------- | ---------------------------------------------- | | Status | unmaintained | | Package | spirv_headers | | Version | 1.5.0 | | URL | https://github.com/gfx-rs/rspirv/issues/197 | | Date | 2021-08-16 |

Because of versioning issues; the spirv_headers crate is unmaintained. Use spirv for parsing spirv files.

See advisory page for additional details.

net2 crate has been deprecated; use socket2 instead

| Details | | | ------------------- | ---------------------------------------------- | | Status | unmaintained | | Package | net2 | | Version | 0.2.37 | | URL | https://github.com/deprecrated/net2-rs/commit/3350e3819adf151709047e93f25583a5df681091 | | Date | 2020-05-01 |

The net2 crate has been deprecated and users are encouraged to considered socket2 instead.

See advisory page for additional details.

Potential segfault in the time crate

| Details | | | ------------------- | ---------------------------------------------- | | Package | time | | Version | 0.1.43 | | URL | https://github.com/time-rs/time/issues/293 | | Date | 2020-11-18 | | Patched versions | >=0.2.23 | | Unaffected versions | =0.2.0,=0.2.1,=0.2.2,=0.2.3,=0.2.4,=0.2.5,=0.2.6 |

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

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 the updated, unaffected code.

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.

References

time-rs/time#293

See advisory page for additional details.

Out-of-bounds write in nix::unistd::getgrouplist

| Details | | | ------------------- | ---------------------------------------------- | | Package | nix | | Version | 0.18.0 | | URL | https://github.com/nix-rust/nix/issues/1541 | | Date | 2021-09-27 | | Patched versions | ^0.20.2,^0.21.2,^0.22.2,>=0.23.0 | | Unaffected versions | <0.16.0 |

On certain platforms, if a user has more than 16 groups, the nix::unistd::getgrouplist function will call the libc getgrouplist function with a length parameter greater than the size of the buffer it provides, resulting in an out-of-bounds write and memory corruption.

The libc getgrouplist function takes an in/out parameter ngroups specifying the size of the group buffer. When the buffer is too small to hold all of the reqested user's group memberships, some libc implementations, including glibc and Solaris libc, will modify ngroups to indicate the actual number of groups for the user, in addition to returning an error. The version of nix::unistd::getgrouplist in nix 0.16.0 and up will resize the buffer to twice its size, but will not read or modify the ngroups variable. Thus, if the user has more than twice as many groups as the initial buffer size of 8, the next call to getgrouplist will then write past the end of the buffer.

The issue would require editing /etc/groups to exploit, which is usually only editable by the root user.

See advisory page for additional details.

Potential segfault in localtime_r invocations

| Details | | | ------------------- | ---------------------------------------------- | | Package | chrono | | Version | 0.4.19 | | URL | https://github.com/chronotope/chrono/issues/499 | | Date | 2020-11-10 |

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

• time-rs/time#293

See advisory page for additional details.