OpenSER 1.2.2 does not verify the Digest authentication header URI against the Request URI in SIP messages, which allows remote attackers to use sniffed Digest authentication credentials to call arbitrary telephone numbers or spoof caller ID (aka "toll fraud and authentication forward attack")
Published Oct 16, 2007
5.0
MEDIUMCVSS 2.0
EPSS 1.62%
Description
OpenSER 1.2.2 does not verify the Digest authentication header URI against the Request URI in SIP messages, which allows remote attackers to use sniffed Digest authentication credentials to call arbitrary telephone numbers or spoof caller ID (aka "toll fraud and authentication forward attack"). NOTE: Debian disputes this issue, stating that "having the two URIs mismatch is allowed by the standard and happens in some setups for valid reasons.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.62% (0.01624) | 75.25th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.62% (0.01624) | 72.92th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.56% (0.00562) | 66.37th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.78% (0.00779) | 82.07th | v3 (v2023.03.01) |
| Jul 12, 2024 | 0.93% (0.00929) | 83.14th | v3 (v2023.03.01) |
| Jun 4, 2024 | 0.81% (0.00809) | 81.75th | v3 (v2023.03.01) |
| Mar 19, 2024 | 0.75% (0.00748) | 80.53th | v3 (v2023.03.01) |
| Feb 10, 2024 | 0.70% (0.00696) | 79.61th | v3 (v2023.03.01) |
| Jan 4, 2024 | 0.66% (0.00662) | 77.45th | v3 (v2023.03.01) |
| Nov 27, 2023 | 0.65% (0.00650) | 77.07th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.68% (0.00677) | 77.61th | v3 (v2023.03.01) |
| Oct 21, 2023 | 0.65% (0.00652) | 77.10th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.60% (0.00603) | 75.20th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (7)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=446956 x_refsource_MISC
- http://lists.grok.org.uk/pipermail/full-disclosure/2007-October/066581.html mailing-listx_refsource_FULLDISC
- http://lists.grok.org.uk/pipermail/full-disclosure/2007-October/066691.html mailing-listx_refsource_FULLDISC
- http://lists.grok.org.uk/pipermail/full-disclosure/2007-October/066694.html mailing-listx_refsource_FULLDISC
- http://secunia.com/advisories/27204 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.securityfocus.com/bid/26057 vdb-entryx_refsource_BID
- https://exchange.xforce.ibmcloud.com/vulnerabilities/37197 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=446956 | x_refsource_MISC | |
| http://lists.grok.org.uk/pipermail/full-disclosure/2007-October/066581.html | mailing-listx_refsource_FULLDISC | |
| http://lists.grok.org.uk/pipermail/full-disclosure/2007-October/066691.html | mailing-listx_refsource_FULLDISC | |
| http://lists.grok.org.uk/pipermail/full-disclosure/2007-October/066694.html | mailing-listx_refsource_FULLDISC | |
| http://secunia.com/advisories/27204 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.securityfocus.com/bid/26057 | vdb-entryx_refsource_BID | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/37197 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.