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Debian Security Advisory 4031-1

Debian Security Advisory 4031-1
Posted Nov 14, 2017
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4031-1 - Several vulnerabilities have been discovered in the interpreter for the Ruby language.

tags | advisory, vulnerability, ruby
systems | linux, debian
advisories | CVE-2017-0898, CVE-2017-0903, CVE-2017-10784, CVE-2017-14033
MD5 | 972ec8e478a4d320e8e4ad4533c5b816

Debian Security Advisory 4031-1

Change Mirror Download

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Debian Security Advisory DSA-4031-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
November 11, 2017 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : ruby2.3
CVE ID : CVE-2017-0898 CVE-2017-0903 CVE-2017-10784 CVE-2017-14033
Debian Bug : 875928 875931 875936 879231

Several vulnerabilities have been discovered in the interpreter for the
Ruby language. The Common Vulnerabilities and Exposures project
identifies the following problems:

CVE-2017-0898

aerodudrizzt reported a buffer underrun vulnerability in the sprintf
method of the Kernel module resulting in heap memory corruption or
information disclosure from the heap.

CVE-2017-0903

Max Justicz reported that RubyGems is prone to an unsafe object
deserialization vulnerability. When parsed by an application which
processes gems, a specially crafted YAML formatted gem specification
can lead to remote code execution.

CVE-2017-10784

Yusuke Endoh discovered an escape sequence injection vulnerability
in the Basic authentication of WEBrick. An attacker can take
advantage of this flaw to inject malicious escape sequences to the
WEBrick log and potentially execute control characters on the
victim's terminal emulator when reading logs.

CVE-2017-14033

asac reported a buffer underrun vulnerability in the OpenSSL
extension. A remote attacker can take advantage of this flaw to
cause the Ruby interpreter to crash leading to a denial of service.

For the stable distribution (stretch), these problems have been fixed in
version 2.3.3-1+deb9u2.

We recommend that you upgrade your ruby2.3 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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