CVE-2015-2326
Published: 1 April 2015
The pcre_compile2 function in PCRE before 8.37 allows context-dependent attackers to compile incorrect code and cause a denial of service (out-of-bounds read) via regular expression with a group containing both a forward referencing subroutine call and a recursive back reference, as demonstrated by "((?+1)(\1))/".
Notes
| Author | Note |
|---|---|
| tyhicks | Valgrind detects a 1-byte invalid read on Vivid through Trusty |
| mdeslaur | was supposed to be fixed in wily (2:8.35-7ubuntu2) but got reverted in (2:8.35-7ubuntu5) by mistake CVE-2015-2325_CVE-2015-2326_CVE-2015-3210_CVE-2015-5073.patch in jessie |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
pcre3 Launchpad, Ubuntu, Debian |
lucid |
Ignored
(end of life)
|
| precise |
Not vulnerable
(8.12-4)
|
|
| trusty |
Released
(1:8.31-2ubuntu2.1)
|
|
| upstream |
Needed
|
|
| utopic |
Ignored
(end of life)
|
|
| vivid |
Released
(2:8.35-3.3ubuntu1.1)
|
|
| wily |
Released
(2:8.35-7.1ubuntu1.3)
|
|
|
Patches: upstream: http://vcs.pcre.org/pcre?view=revision&revision=1529 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |