Details
USN-222-1 fixed a vulnerability in the Perl interpreter. It was
discovered that the version of USN-222-1 was not sufficient to handle
all possible cases of malformed input that could lead to arbitrary
code execution, so another update is necessary.
Original advisory:
Jack Louis of Dyad Security discovered that Perl did not
sufficiently check the explicit length argument in format strings.
Specially crafted format strings with overly large length arguments
led to a crash of the Perl interpreter or even to execution of
arbitrary attacker-defined code with the privileges of the user
running the Perl program.
However, this attack was only possible in insecure Perl programs
which use variables with user-defined values in string
interpolations without checking their validity.
USN-222-1 fixed a vulnerability in the Perl interpreter. It was
discovered that the version of USN-222-1 was not sufficient to handle
all possible cases of malformed input that could lead to arbitrary
code execution, so another update is necessary.
Original advisory:
Jack Louis of Dyad Security discovered that Perl did not
sufficiently check the explicit length argument in format strings.
Specially crafted format strings with overly large length arguments
led to a crash of the Perl interpreter or even to execution of
arbitrary attacker-defined code with the privileges of the user
running the Perl program.
However, this attack was only possible in insecure Perl programs
which use variables with user-defined values in string
interpolations without checking their validity.
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 5.10 breezy | perl-base – | ||
| libperl5.8 – | |||
| 5.04 hoary | perl-base – | ||
| libperl5.8 – | |||
| 4.10 warty | perl-base – | ||
| libperl5.8 – | |||
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.