VDB
CVE-2011-2536
CVE-2011-2536
PUBLISHED
CVSS 5 MEDIUM
chan_sip.c in the SIP channel driver in Asterisk Open Source 1.4.x before 1.4.41.2, 1.6.2.x before 1.6.2.18.2, and 1.8.x before 1.8.4.4, and Asterisk Business Edition C.3.x before C.3.7.3, disregards the alwaysauthreject option and generates different responses for invalid SIP requests depending on whether the user account exists, which allows remote attackers to enumerate account names via a series of requests.
EPSS 1.94% · 80.0th percentile
Risk Scores
CVSS 2.0
5
EPSS Score
1.94%
80.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| digium | asterisk | 1.4.20, 1.8.0, 1.8.0 |
| n/a | n/a | n/a |
Timeline
- Jul 6, 2011 CVE Published
- Feb 4, 2022 EPSS Score
- Mar 29, 2022 EPSS Score
- May 21, 2022 EPSS Score
- Jul 15, 2022 EPSS Score
- Oct 29, 2022 EPSS Score
- Dec 21, 2022 EPSS Score
- Feb 13, 2023 EPSS Score
- Mar 7, 2023 EPSS Score
- Apr 7, 2023 EPSS Score
- May 30, 2023 EPSS Score
- Jul 22, 2023 EPSS Score