CVE-2021-29933 Double free in insert_many
A double-free vulnerability in the insert_many Rust crate allows attackers to cause memory corruption or crashes when a panic occurs during iteration.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-29933?
CVE-2021-29933 is a high-severity use after free vulnerability in n/a, published on 1 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in the insert_many crate through 2021-01-26 for Rust. Elements may be dropped twice if a .next() method panics.
Weakness: CWE-415
Which versions are affected by CVE-2021-29933?
3 open source packages ship an affected version, including insert_many. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
insert_many crates.io | All versions to 0.1.1 | None |
insert_many crates.io | All versions to 0.1.1 | None |
insert_many crates.io | From 0.0.0-0 | None |
Products include Insert Many Project Insert Many.
How do I fix CVE-2021-29933?
No fix has been published for CVE-2021-29933 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2021-29933 being exploited?
There is no known exploitation of CVE-2021-29933 in the wild and no public exploit code.
Sources
Also known as GHSA-29hg-r7c7-54fr, RUSTSEC-2021-0042.