LOW
acl.c in Tinyproxy before 1.8.3, when an Allow configuration setting specifies a CIDR block, permits TCP connections from all IP addresses, which makes it easier for remote attackers to hide the origin of web traffic by leveraging the open HTTP proxy server
Published Apr 29, 2011
2.6
LOWCVSS 2.0
EPSS 1.75%
Description
acl.c in Tinyproxy before 1.8.3, when an Allow configuration setting specifies a CIDR block, permits TCP connections from all IP addresses, which makes it easier for remote attackers to hide the origin of web traffic by leveraging the open HTTP proxy server.
Affected products
No data.
Configuration 1
OR
- ≤ 1.8.2
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.0
- 1.5.1
- 1.5.1
- 1.5.1
- 1.5.1
- 1.5.1
- 1.5.1
- 1.5.1
- 1.5.1
- 1.5.1
- 1.5.1
- 1.5.1
- 1.5.2
- 1.5.2
- 1.5.2
- 1.5.3
- 1.5.3
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.1
- 1.6.2
- 1.6.3
- 1.6.4
- 1.6.5
- 1.7.0
- 1.7.1
- 1.8.0
- 1.8.1
Configuration 2
- 6.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
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.
2.6 LOW NVD
AV:N/AC:H/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity High
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.75% 0.01755
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01755
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.75% (0.01755) | 77.10th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.75% (0.01755) | 74.94th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.78% (0.00781) | 72.02th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.43% (0.00432) | 75.36th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.43% (0.00432) | 73.82th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.43% (0.00432) | 70.54th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.78% (0.01776) | 76.86th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.78% (0.01776) | 76.81th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.78% (0.01776) | 74.78th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.78% (0.01776) | 53.99th | v2 (v2022.01.01) |
Weaknesses (1)
References (9)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=621493 x_refsource_CONFIRMIssue TrackingPatch
- http://openwall.com/lists/oss-security/2011/04/07/9 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://openwall.com/lists/oss-security/2011/04/08/3 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://secunia.com/advisories/44274 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2011/dsa-2222 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://banu.com/bugzilla/show_bug.cgi?id=90 x_refsource_CONFIRMBroken Link
- https://banu.com/cgit/tinyproxy/diff/?id=e8426f6662dc467bd1d827100481b95d9a4a23e4 x_refsource_CONFIRMBroken Link
- https://bugzilla.redhat.com/show_bug.cgi?id=694658 x_refsource_CONFIRMIssue TrackingPatch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67256 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=621493 | x_refsource_CONFIRMIssue TrackingPatch | |
| http://openwall.com/lists/oss-security/2011/04/07/9 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://openwall.com/lists/oss-security/2011/04/08/3 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://secunia.com/advisories/44274 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.debian.org/security/2011/dsa-2222 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| https://banu.com/bugzilla/show_bug.cgi?id=90 | x_refsource_CONFIRMBroken Link | |
| https://banu.com/cgit/tinyproxy/diff/?id=e8426f6662dc467bd1d827100481b95d9a4a23e4 | x_refsource_CONFIRMBroken Link | |
| https://bugzilla.redhat.com/show_bug.cgi?id=694658 | x_refsource_CONFIRMIssue TrackingPatch | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/67256 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Apr 29, 2011
Updated Aug 6, 2024
Reserved Mar 21, 2011
Link CVE-2011-1499
CISA Vulnrichment
Updated n/a