protection mechanisms
in Linux kernel 2.6.x before 2.6.24.6, and 2.6.25 before 2.6.25.1,
allows local users to cause a denial of service (OOPS) and possibly
gain privileges via unspecified vectors. (CVE-2008-1375)
The Linux kernel before 2.6.25.2 does not apply a certain protection
mechanism for fcntl functionality, which allows local users to (1)
execute code in parallel or (2) exploit a race condition to obtain
re-ordered access to the descriptor table. (CVE-2008-1669)
To update your kernel, please follow the directions located at:
The SSL implementation in Mozilla Firefox before 3.5.14 and 3.6.x
before 3.6.11, Thunderbird before 3.0.9 and 3.1.x before 3.1.5, and
SeaMonkey before 2.0.9 does not properly set the minimum key length
for Diffie-Hellman Ephemeral (DHE) mode, which makes it easier for
remote attackers to defeat cryptographic protection mechanisms via
a brute-force attack (CVE-2010-3173).
Unspecified vulnerability in the browser engine in Mozilla Firefox
3.5.x before 3.5.14, Thunderbird before 3.0.9, and SeaMonkey before
2.0.9 allows remote attackers to cause a denial of service (memory
in Linux kernel 2.6.x before 2.6.24.6, and 2.6.25 before 2.6.25.1,
allows local users to cause a denial of service (OOPS) and possibly
gain privileges via unspecified vectors. (CVE-2008-1375)
The Linux kernel before 2.6.25.2 does not apply a certain protection
mechanism for fcntl functionality, which allows local users to (1)
execute code in parallel or (2) exploit a race condition to obtain
re-ordered access to the descriptor table. (CVE-2008-1669)
To update your kernel, please follow the directions located at:
The SSL implementation in Mozilla Firefox before 3.5.14 and 3.6.x
before 3.6.11, Thunderbird before 3.0.9 and 3.1.x before 3.1.5, and
SeaMonkey before 2.0.9 does not properly set the minimum key length
for Diffie-Hellman Ephemeral (DHE) mode, which makes it easier for
remote attackers to defeat cryptographic protection mechanisms via
a brute-force attack (CVE-2010-3173).
Unspecified vulnerability in the browser engine in Mozilla Firefox
3.5.x before 3.5.14, Thunderbird before 3.0.9, and SeaMonkey before
2.0.9 allows remote attackers to cause a denial of service (memory
CVE-2008-5510
Kojima Hajime and Jun Muto discovered that escaped null characters
were ignored by the CSS parser and could lead to the bypass of
protection mechanisms (MFSA 2008-67)
CVE-2008-5511
It was discovered that it is possible to perform cross-site scripting
attacks via an XBL binding to an "unloaded document." (MFSA 2008-68)
Framework modification can be achieved by tampering with a Framework DLL and "pushing" it back into the Framework.
The process is composed of several steps, described thoroughly at the corresponding whitepaper.
It also exposes a flaw in the manner in which a .NET Framework DLL is loaded, and how it is possible to bypass its signature mechanism.
Instead of re-signing tampered DLL's with a spoofed Microsoft signature key - surprisingly, it was found during this research that the modified DLL can be directly copied to the correct location at the file system, because the SN mechanism does not check the actual signature of a loaded DLL but blindly loads the DLL based on the directory name with the corresponding signature name!
It is important to mention that this technique does not requires "full trust" permissions, which further proves the fact that the GAC / CAS protection mechanisms are broken.
This paper also introduces ".Net-Sploit" - a new tool for building MSIL rootkits that will enable the user to inject preloaded/custom payload to the Framework core DLL.
You can find the detailed whitepaper, .NET-Sploit tool, source code, and the OWASP presentation at:
http://www.applicationsecurity.co.il/.NET-Framework-Rootkits.aspx
in Linux kernel 2.6.x before 2.6.24.6, and 2.6.25 before 2.6.25.1,
allows local users to cause a denial of service (OOPS) and possibly
gain privileges via unspecified vectors. (CVE-2008-1375)
The Linux kernel before 2.6.25.2 does not apply a certain protection
mechanism for fcntl functionality, which allows local users to (1)
execute code in parallel or (2) exploit a race condition to obtain
re-ordered access to the descriptor table. (CVE-2008-1669)
To update your kernel, please follow the directions located at:
handling rules, IP access restrictions or authentication rules.
Extraneous trailing spaces in file names are not correctly handled when
applying file handling rules or access restrictions. By abusing of these
flaws, Cherokee configuration folders can be accessed from any IP,
without authentication bypassing the web server security protection
mechanisms.
. Mongoose Web Server [3]. Mongoose does not correctly handle Windows
short file names (and folder names) when applying preprocessing rules or
access restrictions. As a result, an attacker can bypass the web server
security protection mechanisms, and protected files can be accessed
Technical Description:
Versions 2.4 and 2.2 of Profense Web Application Firewall with the default configuration in negative model (blacklist approach) can be evaded to inject XSS (Cross-Site Scripting). The problem is due to the built-in core rules that can be abused using the flexibility provided by HTML and JavaScript.
The vulnerability can be reproduced by injecting a common XSS attack in a vulnerable application protected by Profense Web Application Firewall. Inserting extra characters in the JavaScript close tag will bypass the XSS protection mechanisms. An example is shown below:
http://testcases/phptest/xss.php?var=%3Cscript%3Ealert(document.cookie)%3C/script%20ByPass%3E
::::: Static root password exposes administrative interface :::::
Authority.
CVE-2010-3173
NSS does not properly set the minimum key length for
Diffie-Hellman Ephemeral (DHE) mode, which makes it easier for
remote attackers to defeat cryptographic protection mechanisms
via a brute-force attack.
For the stable distribution (lenny), these problems have been fixed in
version 3.12.3.1-0lenny2.
Every hot topic in the security market is welcome. These are only some
examples:
- innovative defensive and offensive techniques.
- everything related to fraud, phishing, trojan horses in financial
entities, protection mechanisms and technologies...
- "reversing", low-level techniques, kernel, ...
- vulnerabilities discovery, "fuzzing" and related topics.
- virtual contexts attacks, clusters, "cloud computing" and new "in the
cloud" products.
- cryptography and cryptanalysis.
======================
3) Technical details
======================
Lexmark products have connection flood protection mechanisms that
limit the number of simultaneous network
connections that can be made to the device on most TCP service ports.
(21/FTP 79/Finger, 515/LPD, 631/IPP,
5001, 9100-9104, 9200, 9300, 9400, 9500-9501 & 9600) The FTP service
exception handler does not properly
information related to register size, which has unspecified impact
and local attack vectors, probably related to reading or writing
kernel memory. (CVE-2008-1675)
Linux kernel before 2.6.25.2 does not apply a certain protection
mechanism for fcntl functionality, which allows local users to (1)
execute code in parallel or (2) exploit a race condition to obtain
re-ordered access to the descriptor table. (CVE-2008-1669)
Additionaly, a number of fixes has been included for the rtc driver,
Arima W651DI audio chipset, unionfs, as well as Tomoyolinux has
The personality subsystem in the Linux kernel before 2.6.31-rc3 has a
PER_CLEAR_ON_SETID setting that does not clear the ADDR_COMPAT_LAYOUT
and MMAP_PAGE_ZERO flags when executing a setuid or setgid program,
which makes it easier for local users to leverage the details of
memory usage to (1) conduct NULL pointer dereference attacks, (2)
bypass the mmap_min_addr protection mechanism, or (3) defeat address
space layout randomization (ASLR). (CVE-2009-1895)
Stack-based buffer overflow in the parse_tag_11_packet function in
fs/ecryptfs/keystore.c in the eCryptfs subsystem in the Linux kernel
before 2.6.30.4 allows local users to cause a denial of service
in Linux kernel 2.6.x before 2.6.24.6, and 2.6.25 before 2.6.25.1,
allows local users to cause a denial of service (OOPS) and possibly
gain privileges via unspecified vectors. (CVE-2008-1375)
The Linux kernel before 2.6.25.2 does not apply a certain protection
mechanism for fcntl functionality, which allows local users to (1)
execute code in parallel or (2) exploit a race condition to obtain
re-ordered access to the descriptor table. (CVE-2008-1669)
To update your kernel, please follow the directions located at:
dnsmasq (http://www.thekelleys.org.uk/dnsmasq/doc.html) a popular DHCP
and DNS forwarder and cache server used on many DSL/Cable routers now
has a simple DNS Rebinding protection mechanism. When executed with the
--stop-dns-rebind option the DNS resolver in dnsmasq will filter out
private IP addresses (127.0.0.0/8, 192.168.0.0/16, 10.0.0.0/8,
172.16.0.0/12 and 169.254.0.0/16). This should be sufficient for most
private/home users.
Feedback welcome.
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