CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
86.5%
PCRE 7.8 and 8.32 through 8.37, and PCRE2 10.10 mishandle group empty matches, which might allow remote attackers to cause a denial of service (stack-based buffer overflow) via a crafted regular expression, as demonstrated by /^(?:(?(1)\.|([^\\W_])?)+)+$/.
Vendor | Product | Version | CPE |
---|---|---|---|
pcre | pcre2 | 10.10 | cpe:2.3:a:pcre:pcre2:10.10:*:*:*:*:*:*:* |
pcre | pcre | 7.8 | cpe:2.3:a:pcre:pcre:7.8:*:*:*:*:*:*:* |
pcre | pcre | 8.32 | cpe:2.3:a:pcre:pcre:8.32:*:*:*:*:*:*:* |
pcre | pcre | 8.33 | cpe:2.3:a:pcre:pcre:8.33:*:*:*:*:*:*:* |
pcre | pcre | 8.34 | cpe:2.3:a:pcre:pcre:8.34:*:*:*:*:*:*:* |
pcre | pcre | 8.35 | cpe:2.3:a:pcre:pcre:8.35:*:*:*:*:*:*:* |
pcre | pcre | 8.36 | cpe:2.3:a:pcre:pcre:8.36:*:*:*:*:*:*:* |
pcre | pcre | 8.37 | cpe:2.3:a:pcre:pcre:8.37:*:*:*:*:*:*:* |
ibm | powerkvm | 2.1 | cpe:2.3:a:ibm:powerkvm:2.1:*:*:*:*:*:*:* |
ibm | powerkvm | 3.1 | cpe:2.3:a:ibm:powerkvm:3.1:*:*:*:*:*:*:* |
rhn.redhat.com/errata/RHSA-2016-1025.html
rhn.redhat.com/errata/RHSA-2016-2750.html
vcs.pcre.org/pcre?view=revision&revision=1566
www-01.ibm.com/support/docview.wss?uid=isg3T1023886
www.openwall.com/lists/oss-security/2015/06/03/7
www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
www.securityfocus.com/bid/75018
access.redhat.com/errata/RHSA-2016:1132
bugs.exim.org/show_bug.cgi?id=1638
bugzilla.redhat.com/show_bug.cgi?id=1228283
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
86.5%