ID CVE-2015-8388
Summary PCRE before 8.38 mishandles the /(?=di(?<=(?1))|(?=(.))))/ pattern and related patterns with an unmatched closing parenthesis, which allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.
Vulnerable Configurations
  • cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:*
  • cpe:2.3:a:pcre:perl_compatible_regular_expression_library:8.36:*:*:*:*:*:*:*
  • cpe:2.3:a:pcre:perl_compatible_regular_expression_library:8.37:*:*:*:*:*:*:*
Base: 7.5 (as of 05-01-2018 - 02:30)
  • Command Delimiters
    An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or a blacklist input validation, as opposed to whitelist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or blacklist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.
  • Flash Parameter Injection
    An attacker injects values to global parameters into a Flash movie embedded in an HTML document. These injected parameters are controlled through arguments in the URL used to access the embedding HTML document. As such, this is a form of HTTP parameter injection, but the abilities granted to the Flash document (such as access to a page's document model, including associated cookies) make this attack more flexible. The injected parameters can allow the attacker to control other objects within the Flash movie as well as full control over the parent document's DOM model.
  • Argument Injection
    An attacker changes the behavior or state of a targeted application through injecting data or command syntax through the targets use of non-validated and non-filtered arguments of exposed services or methods.
  • Using Slashes in Alternate Encoding
    This attack targets the encoding of the Slash characters. An attacker would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the attacker many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.
cvss-vector via4 AV:N/AC:L/Au:N/C:P/I:P/A:P
redhat via4
  • rhsa
    id RHSA-2016:1025
  • rhsa
    id RHSA-2016:1132
  • rhsa
    id RHSA-2016:2750
  • pcre-0:8.32-15.el7_2.1
  • pcre-devel-0:8.32-15.el7_2.1
  • pcre-static-0:8.32-15.el7_2.1
  • pcre-tools-0:8.32-15.el7_2.1
refmap via4
bid 85576
gentoo GLSA-201607-02
mlist [oss-security] 20151128 Re: Heap Overflow in PCRE
Last major update 05-01-2018 - 02:30
Published 02-12-2015 - 01:59
Last modified 27-12-2019 - 16:08
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