Amazon Linux AMI : aws-cfn-bootstrap (ALAS-2017-861)

A vulnerability was reported in the CloudFormation bootstrap tools that allows an attacker to execute arbitrary code as root if they have local access to the system and are able to create files in a specific directory CVE-2017-9450 C Tenable Network Security, Inc. The descriptive text and package...

Amazon Linux AMI : c-ares (ALAS-2017-859)

The c-ares function aresparsenaptrreply, which is used for parsing NAPTR responses, could be triggered to read memory outside of the given input buffer if the passed in DNS response packet was crafted in a particular way. CVE-2017-1000381 C Tenable Network Security, Inc. The descriptive text and...

Amazon Linux AMI : bind (ALAS-2017-858)

Security Fixes: A flaw was found in the way BIND handled TSIG authentication for dynamic updates. A remote attacker able to communicate with an authoritative BIND server could use this flaw to manipulate the contents of a zone, by forging a valid TSIG or SIG0 signature for a dynamic update reques...

Amazon Linux AMI : golang (ALAS-2017-857)

Golang: Elliptic curves carry propagation issue in x86-64 P-256. A carry propagation flaw was found in the implementation of the P-256 elliptic curve in golang. An attacker could use this flaw to extract private keys when static ECDH is used. CVE-2017-8932 C Tenable Network Security, Inc. The...

Amazon Linux AMI : sudo (ALAS-2017-855)

It was found that the original fix for CVE-2017-1000367 was incomplete. A flaw was found in the way sudo parsed tty information from the process status file in the proc filesystem. A local user with privileges to execute commands via sudo could use this flaw to escalate their privileges to root...

Amazon Linux AMI : tomcat7 (ALAS-2017-853)

Security constrained bypass in error page mechanism : A vulnerability was discovered in the error page mechanism in Tomcat's DefaultServlet implementation. A crafted HTTP request could cause undesired side effects, possibly including the removal or replacement of the custom error page...

Amazon Linux AMI : tomcat8 (ALAS-2017-854)

Security constrained bypass in error page mechanism : A vulnerability was discovered in the error page mechanism in Tomcat's DefaultServlet implementation. A crafted HTTP request could cause undesired side effects, possibly including the removal or replacement of the custom error page...

Amazon Linux AMI : mercurial (ALAS-2017-856)

Python debugger accessible to authorized users : A flaw was found in the way 'hg serve --stdio' command in Mercurial handled command-line options. A remote, authenticated attacker could use this flaw to execute arbitrary code on the Mercurial server by using specially crafted command-line options...

Amazon Linux AMI : openvpn (ALAS-2017-852)

OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service when receiving malformed IPv6 packet. CVE-2017-7508 OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service by authenticated remote attacker via sending a certificate with an...

Amazon Linux AMI : curl (ALAS-2017-850)

The ourWriteOut function in toolwriteout.c in curl 7.53.1 might allow physically proximate attackers to obtain sensitive information from process memory in opportunistic circumstances by reading a workstation screen during use of a --write-out argument ending in a certain character, which leads t...

Amazon Linux AMI : nss (ALAS-2017-848)

NULL pointer dereference when handling empty SSLv2 messages : A NULL pointer dereference flaw was found in the way NSS handled empty SSLv2 messages. An attacker could use this flaw to crash a server application compiled against the NSS library. CVE-2017-7502 C Tenable Network Security, Inc. The...

Amazon Linux AMI : lynis (ALAS-2017-847)

Unspecified tests in Lynis before 2.5.0 allow local users to write to arbitrary files or possibly gain privileges via a symlink attack on a temporary file. CVE-2017-8108 C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted from Amazon Linux AMI...

Amazon Linux AMI : puppet3 (ALAS-2017-849)

Unsafe YAML deserialization : Versions of Puppet prior to 4.10.1 will deserialize data off the wire from the agent to the server, in this case with a attacker-specified format. This could be used to force YAML deserialization in an unsafe manner, which would lead to remote code execution. This...

Amazon Linux AMI : kernel (ALAS-2017-846)

Module reference leak due to improper shut down of callback channel on umount : The NFSv4 implementation in the Linux kernel through 4.11.1 allows local users to cause a denial of service resource consumption by leveraging improper channel callback shutdown when unmounting an NFSv4 filesystem, ak...

Amazon Linux AMI : httpd (ALAS-2017-851)

Apache HTTP Request Parsing Whitespace Defects It was discovered that the HTTP parser in httpd incorrectly allowed certain characters not permitted by the HTTP protocol specification to appear unencoded in HTTP request headers. If httpd was used in conjunction with a proxy or backend server that...

Amazon Linux AMI : kernel (ALAS-2017-845) (Stack Clash)

An issue was discovered in the size of the stack guard page on Linux, specifically a 4k stack guard page is not sufficiently large and can be jmp'ed over, this affects Linux Kernel versions 4.11.5 and earlier the stackguard page was introduced in 2010. CVE-2017-1000364 The offset2lib patch as use...

Amazon Linux AMI : glibc (ALAS-2017-844) (Stack Clash)

Glibc contains a vulnerability that allows specially crafted LDLIBRARYPATH values to manipulate the heap/stack, causing them to alias, potentially resulting in arbitrary code execution. Please note that additional hardening changes have been made to glibc to prevent manipulation of stack and heap...

Amazon Linux AMI : libtirpc (ALAS-2017-840)

Memory leak when failing to parse XDR strings or bytearrays It was found that due to the way rpcbind uses libtirpc libntirpc, a memory leak can occur when parsing specially crafted XDR messages. An attacker sending thousands of messages to rpcbind could cause its memory usage to grow without boun...

Amazon Linux AMI : rpcbind (ALAS-2017-841)

It was found that due to the way rpcbind uses libtirpc libntirpc, a memory leak can occur when parsing specially crafted XDR messages. An attacker sending thousands of messages to rpcbind could cause its memory usage to grow without bound, eventually causing it to be terminated by the OOM killer...

Amazon Linux AMI : postgresql93 / postgresql94,postgresql95 (ALAS-2017-839)

Selectivity estimators bypass SELECT privilege checks It was found that some selectivity estimation functions did not check user privileges before providing information from pgstatistic, possibly leaking information. An unprivileged attacker could use this flaw to steal some information from tabl...