Vulnerability Details : CVE-2015-2688
buf_pullup in Tor before 0.2.4.26 and 0.2.5.x before 0.2.5.11 does not properly handle unexpected arrival times of buffers with invalid layouts, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via crafted packets.
Vulnerability category: Denial of service
Products affected by CVE-2015-2688
- cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*
- cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2015-2688
0.57%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 66 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-2688
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2015-2688
-
The product does not handle or incorrectly handles an exceptional condition.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-2688
-
https://lists.torproject.org/pipermail/tor-talk/2015-March/037281.html
[tor-talk] Pre-announcement: source for Tor 0.2.4.26 and 0.2.5.11 is available.Mailing List;Vendor Advisory
-
https://trac.torproject.org/projects/tor/ticket/15083
#15083 (Assertion ch->data < &ch->mem[0]+ch->memlen failed) – Tor Bug Tracker & WikiPatch;Vendor Advisory
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