CVE-2017-12999

The IS-IS parser in tcpdump before 4.9.2 has a buffer over-read in print-isoclns.c:isis_print()

published September 14, 2017

CVSS
—
EPSS
3%
Percentile
84.8
In the wild
Unconfirmed
What it is

⚠️ There’s a buffer over-read hiding in tcpdump's IS-IS parser, which could let attackers peek into unintended memory areas! 🔍 Think of it as a library that accidentally allows access to a restricted section, letting an unauthorized patron browse through confidential books. This over-read could expose sensitive information that shouldn't be shared! While it isn't actively being exploited right now, the potential for exposure is concerning. An attacker could use this over-read to glean secret data, leading to disastrous consequences for security and privacy.

Put simply

Think of it as a library that accidentally allows access to a restricted section, letting an unauthorized patron browse through confidential books. This over-read could expose sensitive information that shouldn't be shared! This vulnerability arises in tcpdump before version 4.9.2, where the IS-IS parser lacks proper boundary checks, allowing it to read past the intended buffer limits.

What to do

While it isn't actively being exploited right now, the potential for exposure is concerning. An attacker could use this over-read to glean secret data, leading to disastrous consequences for security and privacy. Upgrade tcpdump to version 4.9.2 or later to resolve this vulnerability. Regularly monitor and review your applications for similar buffer over-read issues to prevent potential leaks. 🛡️ You can tackle this! Stay proactive with your updates, and you'll keep things secure! 💪

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02527 · 84.8th percentile
Published
2017-09-14T06:00Z
EPSS history
Timeline
  • 14 SEP 06:00Z
    The IS-IS parser in tcpdump before 4.9.2 has a buffer over-read in print-isoclns.c:isis_print()
    cvelistv5