ALAS-2014-299


Amazon Linux AMI Security Advisory: ALAS-2014-299
Advisory Release Date: 2014-09-16 22:37 Pacific
Severity: Medium

Issue Overview:

Use-after-free vulnerability in lighttpd before 1.4.33 allows remote attackers to cause a denial of service (segmentation fault and crash) via unspecified vectors that trigger FAMMonitorDirectory failures.

lighttpd before 1.4.34, when SNI is enabled, configures weak SSL ciphers, which makes it easier for remote attackers to hijack sessions by inserting packets into the client-server data stream or obtain sensitive information by sniffing the network.

lighttpd before 1.4.33 does not check the return value of the (1) setuid, (2) setgid, or (3) setgroups functions, which might cause lighttpd to run as root if it is restarted and allows remote attackers to gain privileges, as demonstrated by multiple calls to the clone function that cause setuid to fail when the user process limit is reached.


Affected Packages:

lighttpd


Issue Correction:
Run yum update lighttpd to update your system.

New Packages:
i686:
    lighttpd-mod_geoip-1.4.34-4.12.amzn1.i686
    lighttpd-fastcgi-1.4.34-4.12.amzn1.i686
    lighttpd-debuginfo-1.4.34-4.12.amzn1.i686
    lighttpd-1.4.34-4.12.amzn1.i686
    lighttpd-mod_mysql_vhost-1.4.34-4.12.amzn1.i686

src:
    lighttpd-1.4.34-4.12.amzn1.src

x86_64:
    lighttpd-fastcgi-1.4.34-4.12.amzn1.x86_64
    lighttpd-mod_geoip-1.4.34-4.12.amzn1.x86_64
    lighttpd-mod_mysql_vhost-1.4.34-4.12.amzn1.x86_64
    lighttpd-debuginfo-1.4.34-4.12.amzn1.x86_64
    lighttpd-1.4.34-4.12.amzn1.x86_64