This project might be open to known security vulnerabilities, which can be prevented by tightening the version range of affected dependencies. Find detailed information at the bottom.

Crate battery


(9 total, 3 outdated, 1 possibly insecure)

 cfg-if^ to date
 num-traits^ to date
 uom^0.300.33.0out of date
 libc^ to date
 nix ⚠️~ of date
 core-foundation~ of date
 mach^ to date
 lazycell~ to date
 winapi~ to date

Dev dependencies

(2 total, 1 outdated)

 approx^ of date
 tempfile^ to date

Security Vulnerabilities

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


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.