This updated at package fixes two minor problems and one major
problem where the environment can get wiped out prior to the execution of a
scheduled command.
For versions of Red Hat Linux prior to 7.2, this package also fixes a
potential security vulnerability which can result in heap corruption (Red
Hat Linux 7.2 is not vulnerable to this security exploit).
Update 2002-02-01: The package for Red Hat Linux 6.2 tried to source a file
in /etc/init.d, which doesn't exist on a standard system.
A server running the latest version of at could have commands
that depend on the current environment (for example, the PATH) which would
then fail or run incorrectly because the environment would not be
accessible when the command was executed at a later time.
Additionally, in versions of Red Hat Linux prior to 7.2 a malicious local
user could specify an execution time is in a carefully drafted format
causing a heap corruption bug. Since the at command is installed as setuid
root this bug can be exploited.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2002-0004 to this issue. Thanks to zen-parse for
reporting this vulnerability.
In addition to the fixed heap corruption, file handling security on all
versions of at has been improved by adding the O_EXCL (exclusive) option to
an open system call.
| Red Hat Linux 6.2 |
|
| SRPMS: |
ftp://updates.redhat.com/6.2/en/os/SRPMS/at-3.1.8-22.2.src.rpm
Missing file |
beab8c80838d3920d758a2e8e5b5e3b2 |
| |
| Alpha: |
ftp://updates.redhat.com/6.2/en/os/alpha/at-3.1.8-22.2.alpha.rpm
Missing file |
31a1aac9c620778fe24a5d9c73b468c6 |
| |
| IA-32: |
ftp://updates.redhat.com/6.2/en/os/i386/at-3.1.8-22.2.i386.rpm
Missing file |
a5ea88124398a0b937dd93e93d62c3bd |
| |
| Sparc: |
ftp://updates.redhat.com/6.2/en/os/sparc/at-3.1.8-22.2.sparc.rpm
Missing file |
3ee8b5c53f23d0eae9bd78c69621ff78 |
| |
| Red Hat Linux 7.0 |
|
| SRPMS: |
ftp://updates.redhat.com/7.0/en/os/SRPMS/at-3.1.8-23.src.rpm
Missing file |
b1f62f4b41e12a54a1f73d639363a638 |
| |
| Alpha: |
ftp://updates.redhat.com/7.0/en/os/alpha/at-3.1.8-23.alpha.rpm
Missing file |
97e27a1d2dc0f08d8f118209a891689a |
| |
| IA-32: |
ftp://updates.redhat.com/7.0/en/os/i386/at-3.1.8-23.i386.rpm
Missing file |
ea793fd803f10c8fa66abb8191fefb9b |
| |
| Red Hat Linux 7.1 |
|
| SRPMS: |
ftp://updates.redhat.com/7.1/en/os/SRPMS/at-3.1.8-23.src.rpm
Missing file |
b1f62f4b41e12a54a1f73d639363a638 |
| |
| Alpha: |
ftp://updates.redhat.com/7.1/en/os/alpha/at-3.1.8-23.alpha.rpm
Missing file |
97e27a1d2dc0f08d8f118209a891689a |
| |
| IA-32: |
ftp://updates.redhat.com/7.1/en/os/i386/at-3.1.8-23.i386.rpm
Missing file |
ea793fd803f10c8fa66abb8191fefb9b |
| |
| IA-64: |
ftp://updates.redhat.com/7.1/en/os/ia64/at-3.1.8-23.ia64.rpm
Missing file |
8fed88d53824e98f509289c42ea01237 |
| |
| Red Hat Linux 7.2 |
|
| SRPMS: |
ftp://updates.redhat.com/7.2/en/os/SRPMS/at-3.1.8-23.src.rpm
Missing file |
b1f62f4b41e12a54a1f73d639363a638 |
| |
| IA-32: |
ftp://updates.redhat.com/7.2/en/os/i386/at-3.1.8-23.i386.rpm
Missing file |
ea793fd803f10c8fa66abb8191fefb9b |
| |
| IA-64: |
ftp://updates.redhat.com/7.2/en/os/ia64/at-3.1.8-23.ia64.rpm
Missing file |
8fed88d53824e98f509289c42ea01237 |
| |
| s390: |
ftp://updates.redhat.com/7.2/en/os/s390/at-3.1.8-23.s390.rpm
Missing file |
b392c294aab8dfa5ec86255d7582fa04 |
| |
49491 - all environment is wiped out prior to executing user command
51253 - Wrong pointer to time syntax in man page
52626 - "at" RPM says that /var/spool/at/.SEQ should be executable