Feeds

Internet telephony protocol riddled with security bugs

Don't SIP from a poisoned chalice

  • alert
  • submit to reddit

Protecting against web application threats using SSL

Security clearing house CERT this week warned of "numerous vulnerabilities" in multiple vendors' implementations of the Session Initiation Protocol (SIP), an important standard for next-generation Internet telephony systems.

SIP is used to initiate communication and data sessions between users and it is riddled with potential problems, it emerges.

"These vulnerabilities may allow an attacker to gain unauthorized privileged access, cause denial-of-service attacks, or cause unstable system behaviour", CERT warns.

The flaws came to light after Oulu University Secure Programming Group (OUSPG) ran a series of tests on a variety of SIP-enabled products. Most of the problems identified relate to the INVITE message, which is used in setting up sessions.

OUSPG's previous testing work led to vulnerability advisories on LDAP and SNMP, so its work is to be taken seriously.

The vulnerabilities identified with SIP are fairly esoteric and, according to security researchers, are not yet being actively exploited. So we have a little breathing space.

This is just as well as many vendors' products are potentially affected. CERT helpfully provides links to advisories by vendors of the subject and mitigation advice, which you can find here.

An advisory by Cisco supplies more background and an insight into how much work may be needed to guard against vulnerabilities involving SIP. Many vendors, including Microsoft, are still researching the extent to which the issue affects their products. ®

Reducing the cost and complexity of web vulnerability management

More from The Register

next story
Early result from Scots indyref vote? NAW, Jimmy - it's a SCAM
Anyone claiming to know before tomorrow is telling porkies
TOR users become FBI's No.1 hacking target after legal power grab
Be afeared, me hearties, these scoundrels be spying our signals
Home Depot: 56 million bank cards pwned by malware in our tills
That's about 50 per cent bigger than the Target tills mega-hack
Hackers pop Brazil newspaper to root home routers
Step One: try default passwords. Step Two: Repeat Step One until success
NORKS ban Wi-Fi and satellite internet at embassies
Crackdown on tardy diplomatic sysadmins providing accidental unfiltered internet access
UK.gov lobs another fistful of change at SME infosec nightmares
Senior Lib Dem in 'trying to be relevant' shocker. It's only taxpayers' money, after all
Critical Adobe Reader and Acrobat patches FINALLY make it out
Eight vulns healed, including XSS and DoS paths
Spies would need SUPER POWERS to tap undersea cables
Why mess with armoured 10kV cables when land-based, and legal, snoop tools are easier?
prev story

Whitepapers

Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.