Category Archives: Emerging Threats

Cisco Vulns, OS X DoS, SWFIntruder

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A cross site scripting vulnerability has been found in CiscoWorks. The XSS is present in the initial login page. Attackers could use this to steal cookies or execute arbitrary html or script code on a remote user. CiscoWorks versions 2.6 and prior are vulnerable, and Cisco has released a patch for this issue.

The Cisco 7940 SIP Phone is vulnerable to an interesting denial of service. Sending malformed SIP INVITE messages to a 7940 phone can cause the device to reboot, or be put under the DoS condition. If INVITE packets are then sent at certain intervals, the DoS condition will persist. The phone will be in a seemingly working condition, where it continues to send REGISTER commands to the server, but will ring busy on incoming calls and return busy on any calls made by the user. There was no patch or update listed with the advisory.

Cisco Security Agent (CSA) for Windows and Cisco Security Manager are vulnerable to a remote buffer overflow attack. This can be exploited by sending a specially crafted TCP message to port 139 or 445 on a system running the CSA. This could result in a stop error (blue screen) or remote code execution. Cisco has released a free software update to address this vulnerability.

Two Denial of Service attacks for MacOS X have had their exploit code released. The first is in the vpnd which has been tested in Apple MACOS X 10.5.0. The second DoS in a local one in the kernel. This has been testing in Apple MACOS X 10.4 (xnu-792.22.5~1/RELEASE_I386), Apple MACOS X 10.5.1 (xnu-1228.0.2~1/RELEASE_I386) and Apple MACOS X 10.5.1 (xnu-1228.0.2~1/RELEASE_PPC).

WabiSabi Labs (the online exploit auction group), reportedly has a QuickTime vulnerability that could result in remote code execution that is different from the one we mention in “QuickTime 7.2/7.3 RTSP Exploits” (https://stateofsecurity.com/?p=162). We have no way to accurately verify this information though.

A new tool has been released yesterday. The tool, SWFIntruder, is “the first tool specifically developed for analyzing and testing security of Flash applications at runtime.” [1] This looks to be a powerful tool to test flash implementations for the presence of XSS of XSF issues in a semi automated manner. If you are responsible for testing web applications, this may be a tool you’ll want to have a look at.

1. https://www.owasp.org/index.php/Category:SWFIntruder

Multiple XSS Vulnerabilities and 27MHz Research

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Two cross site scripting vulnerabilities were announced today in F5 Firepass 4100 SSL VPN and Apache 2.2.3 and 2.0.46 and above. In the F5 device, input passed to my.activation.php3 and my.logon.php3 is not properly sanitized before returning to the user. In Apache, input via the HTTP method is not properly sanitized before being sent to the user when a “413 Request Entity Too Large” error page is displayed. Both issues can be exploited to execute script or HTML code in a user’s browser session.

A security research team has demonstrated the ability to intercept communications between 27 Mhz keyboards and a computer. The team was able to reverse engineer the packets and break the trivial encryption to sniff commands entered between the keyboard and the computer. Reportedly this can be performed up to 10 m away. Maybe it’s time to take a look at your company’s security policy and see what’s in it about wireless keyboards and reevaluate those decisions.

Two New HP-UX vulnerabilities

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The first is a potential remote execution of code on HP-UX systems that are running Apache. HP-UX B.11.11, B.11.23, B.11.31 running Apache v2.0.59.00.0 or earlier are known to be vulnerable. While the HP security bulletin is a vague, it does cite CVE-2007-5135 which details an off-by-one error in the SSL_get_shared_ciphers function of OpenSSL 0.9.7 – 0.9.7l, and 0.9.8 – 0.9.8f. HP’s original security bulletin is HPSBUX02292 SSRT071499 rev.1. Updates are available.

The second is an XSS issue in HP OpenView Network Node Manager. It appears to be remotely exploitable. Affected versions are HP OpenView Network Node Manager (OV NNM) 6.41, 7.01, 7.51 running on HP-UX B.11.00, B.11.11, and B.11.23, Solaris, Windows NT, Windows 2000, Windows XP, and Linux. The original HP security bulletin is HPSBMA02283 SSRT071319 rev.1. Updates are available for this as well.

Avaya Products Multiple Vulnerabilities

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Avaya has released information on multiple vulnerabilities within their products. The first issue is an error in certain OpenSSL functions.  A certain function can be exploited to cause a buffer overlow and a weakness in the RSA implementation can be exploited to reveal the private keys. The following products are affected:

  • Avaya Communication Manager (CM 3.0)
  • Avaya EMMC (1.017, 1.021)
  • Avaya CCS/SES (3.1 and earlier)
  • Avaya AES (AES 3.1.4 and earlier)

The next set of issues lies in the PCRE libraries. When parsing certain regular expressions an integer overflow can occur and result in a denial of service or potentially compromise an application using the library.  Additionally, an error processing multiple unspecified character classes can be exploited to cause insufficient memory allocation.

The following versions are affected:

  • Avaya Communication Manager (CM 3.1, CM 4.x)
  • Avaya Intuity AUDIX LX (IALX 2.0)
  • Avaya Messaging Storage Server (MSS 3.x)
  • Avaya Message Networking (MN 3.1)
  • Avaya CCS/SES (3.1.1, 3.1.2, 4.0)
  • Avaya AES (AES 4.0.1)

Symantec Backup Exec DoS and Phishing Survey

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Symantec Backup Exec for Windows Servers is vulnerable to denial of service. There are two different issues that could cause a denial of service, one being a NULL pointer reference that can cause the backup exec job engine service to crash with a specially crafted packet sent to TCP port 5633. Two integer overflows within the engine, triggered by a specially crafted packet to port 5633 can cause the service to enter an infinite loop consuming large amounts of CPU time. Backup Exec version 11d build 11.0.7170 and version 11d build 11.0.6.6235 are affected. Users should upgrade to versions Build 11.0.7170 and Build 11.0.6235 respectively.

We found a survey published today that some of you may be interested in. Cloudmark Inc., an anti-spam, anti-phishing outfit, released a survey about phishing sites, and the effects on the perception of the company being phished. It seems that some people (42% of the people surveyed) would have their trust in the brand “greatly reduced” after receiving a phishing email claiming to be from them. Now, of course the phishing email has absolutely nothing to do with the actual company, but it still seems to leave an impression. If the results of this survey can be trusted, it looks like some consumers need to be educated about phishing attacks and the relation to the brand.

IBM Lotus Notes Vulnerabilities

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Today a vulnerability was disclosed that effects IBM Lotus Notes. The issue effects versions 5.x, 6.x, 7.x and 8.x. Specifically, the issue lies within the Lotus Notes viewer, a specially crafted Lotus Notes viewer file (.123 extension) could cause a buffer overflow within the viewer and lead to the execution of arbitrary code.

If you have Lotus Notes 7.x or 8.x, IBM has an update. If you are using version 6.x, or 5.x, there is currently no update. IBM is currently working on an update for 6.x, but will not release one for 5.x. However, a workaround for these versions is to disable the viewer. If the viewer is disabled, then the files will not be opened within Lotus Notes viewer.

New Releases of Firefox and SeaMonkey

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The latest releases of Firefox (2.0.0.10) and SeaMonkey (1.1.7) address three recently discovered vulnerabilities. The first is a race condition in window.location that can allow Cross-site scripting via referer-spoofing. The second is a memory corruption issue which could lead to the execution of arbitrary code. The third is a jar URI scheme vulnerability that can also allow Cross-site scripting to occur.

You should update if you are using one of these products.

For for the original notifications travel over to Mozilla’s known vulnerabilities site

Quicktime 7.2/7.3 RTSP Exploits

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Quicktime versions 7.2 and 7.3 are vulnerable to a stack based overflow. This vulnerability is caused by a boundary error when processing RTSP (Real Time Streaming Protocol) replies. This can be exploited by sending a specially crafted RTSP reply with a long “Content-Type” header. Exploitation requires that a user visits a malicious URL or open a malicious QTL file. Working exploit code is available to the public. There is no update available at this time, so users should beware suspicious links or Quicktime files (qtl).

Linksys XSS

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Bit Defender Online Scanner is vulnerable to remote code execution. A vulnerable ActiveX control can be exploited to execute code on a users system. The vulnerability is reported in version 8.0. There is an updated version available.

Linksys WAG54GS has some cross site scripting issues. Two separate issues can result in either script code execution in a user’s browser, or result in administrative function being performed by others when a logged in administrator visits a malicious site. These vulnerabilities are present in 1.00.06

Perl and PHP Issues, Citrix XSS

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Perl 5.8.8 contains a buffer overflow when processing certain regular expressions. The overflow can occur when switching between byte and Unicode characters. This affects currently installed versions of dev/lang. Users should apply their distributions’ updated version or rebuild the source with a patch applied.

PHP 5.2.4 is vulnerable to multiple issues. Successful exploitation could result in a denial of service condition, could allow an attacker to bypass security restrictions, or ultimately execute arbitrary code. PHP has released version 5.2.5 to address these issues.

Citrix NetScaler contains a XSS bug in the management interface. The vulnerability has been identified in version 8.0, build 47.8 and other versions may be affected. Users of this software should not remain logged in to the management interface while browsing other web sites.