Two vulnerabilities have been discovered in the ARC archive program under Unix. The Common Vulnerabilities and Exposures project identifies the following problems:
Eric Romang discovered that the ARC archive program under Unix creates a temporary file with insecure permissions which may lead to an attacker stealing sensitive information.
Joey Schulze discovered that the temporary file was created in an insecure fashion as well, leaving it open to a classic symlink attack.
The old stable distribution (woody) does not contain arc packages.
For the stable distribution (sarge) these problems have been fixed in version 5.21l-1sarge1.
For the unstable distribution (sid) these problems have been fixed in version 5.21m-1.
We recommend that you upgrade your arc package.
MD5 checksums of the listed files are available in the original advisory.