Python 2.7 before 3.4 only uses the last eight bits of the prefix to randomize hash values, which causes it to compute hash values without restricting the ability to trigger hash collisions predictably and makes it easier for context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-1150.
| Version | Base score | Base severity | Vector |
|---|
| Hyperlink | Resource Type |
|---|
Python 2.7 before 3.4 only uses the last eight bits of the prefix to randomize hash values, which causes it to compute hash values without restricting the ability to trigger hash collisions predictably and makes it easier for context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-1150.
| Type | CWE ID | Description |
|---|---|---|
| text | N/A | n/a |
| Version | Base score | Base severity | Vector |
|---|
| CAPEC ID | Description |
|---|
| Event | Date |
|---|
| Hyperlink | Resource |
|---|---|
| http://www.securityfocus.com/bid/64194 | vdb-entry x_refsource_BID |
| http://www.openwall.com/lists/oss-security/2013/12/09/13 | mailing-list x_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2013/12/09/3 | mailing-list x_refsource_MLIST |
| http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html | vendor-advisory x_refsource_APPLE |
| http://bugs.python.org/issue14621 | x_refsource_CONFIRM |
| https://support.apple.com/kb/HT205031 | x_refsource_CONFIRM |
| Version | Base score | Base severity | Vector |
|---|
| CAPEC ID | Description |
|---|
| Event | Date |
|---|
| Hyperlink | Resource |
|---|---|
| http://www.securityfocus.com/bid/64194 | vdb-entry x_refsource_BID x_transferred |
| http://www.openwall.com/lists/oss-security/2013/12/09/13 | mailing-list x_refsource_MLIST x_transferred |
| http://www.openwall.com/lists/oss-security/2013/12/09/3 | mailing-list x_refsource_MLIST x_transferred |
| http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html | vendor-advisory x_refsource_APPLE x_transferred |
| http://bugs.python.org/issue14621 | x_refsource_CONFIRM x_transferred |
| https://support.apple.com/kb/HT205031 | x_refsource_CONFIRM x_transferred |
Python 2.7 before 3.4 only uses the last eight bits of the prefix to randomize hash values, which causes it to compute hash values without restricting the ability to trigger hash collisions predictably and makes it easier for context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-1150.
| Date Added | Due Date | Vulnerability Name | Required Action |
|---|---|---|---|
| N/A |
| Type | Version | Base score | Base severity | Vector |
|---|---|---|---|---|
| Primary | 2.0 | 4.3 | MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
| Hyperlink | Source | Resource |
|---|---|---|
| http://bugs.python.org/issue14621 | cve@mitre.org | N/A |
| http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html | cve@mitre.org | N/A |
| http://www.openwall.com/lists/oss-security/2013/12/09/13 | cve@mitre.org | N/A |
| http://www.openwall.com/lists/oss-security/2013/12/09/3 | cve@mitre.org | N/A |
| http://www.securityfocus.com/bid/64194 | cve@mitre.org | N/A |
| https://support.apple.com/kb/HT205031 | cve@mitre.org | Vendor Advisory |
| http://bugs.python.org/issue14621 | af854a3a-2127-422b-91ae-364da2661108 | N/A |
| http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html | af854a3a-2127-422b-91ae-364da2661108 | N/A |
| http://www.openwall.com/lists/oss-security/2013/12/09/13 | af854a3a-2127-422b-91ae-364da2661108 | N/A |
| http://www.openwall.com/lists/oss-security/2013/12/09/3 | af854a3a-2127-422b-91ae-364da2661108 | N/A |
| http://www.securityfocus.com/bid/64194 | af854a3a-2127-422b-91ae-364da2661108 | N/A |
| https://support.apple.com/kb/HT205031 | af854a3a-2127-422b-91ae-364da2661108 | Vendor Advisory |