PCRE 8.38 pcre_compile.c pcre_compile2 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.5$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in PCRE 8.38. This issue affects the function pcre_compile2 of the file pcre_compile.c. The manipulation of the argument /((?:F?+(?:^(?(R)a+\){99}-))(?J)(?R(?R/lt/((?RR(?R\){97)?J)?J)(?R(?R\){99|(:(?|(?R)(\kR)|((?R)))HRR)(HR))))))/ results in memory corruption. This vulnerability is known as CVE-2016-1283. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in PCRE 8.38 (Programming Tool Software). Affected is the function pcre_compile2 of the file pcre_compile.c. The manipulation of the argument /((?:F?+(?:^(?(R)a+\){99}-))(?J)(?R(?R/lt/((?RR(?R\){97)?J)?J)(?R(?R\){99|(:(?|(?R)(\kR)|((?R)))HRR)(HR))))))/ with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The pcre_compile2 function in pcre_compile.c in PCRE 8.38 mishandles the /((?:F?+(?:^(?(R)a+\"){99}-))(?J)(?'R'(?'R'<((?'RR'(?'R'\){97)?J)?J)(?'R'(?'R'\){99|(:(?|(?'R')(\k'R')|((?'R')))H'R'R)(H'R))))))/ pattern and related patterns with named subgroups, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

The weakness was published 01/03/2016 (Website). The advisory is shared for download at bugs.exim.org. This vulnerability is traded as CVE-2016-1283. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 07/02/2022).

The vulnerability scanner Nessus provides a plugin with the ID 90306 (Slackware 14.0 / 14.1 / 14.2 / current : php (SSA:2017-300-01)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Slackware Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169378 (OpenSuSE Security Update for pcre (openSUSE-SU-2016:2805-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (90306), SecurityFocus (BID 79825†) and Vulnerability Center (SBV-57950†). Similar entries are available at VDB-81538 and VDB-97348. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 90306
Nessus Name: Slackware 14.0 / 14.1 / 14.2 / current : php (SSA:2017-300-01)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for pcre FEDORA-2016-65833
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

Timelineinfo

01/02/2016 🔍
01/02/2016 +0 days 🔍
01/02/2016 +0 days 🔍
01/03/2016 +1 days 🔍
01/03/2016 +0 days 🔍
04/06/2016 +94 days 🔍
07/02/2022 +2278 days 🔍

Sourcesinfo

Advisory: USN-2943-1
Status: Not defined

CVE: CVE-2016-1283 (🔍)
GCVE (CVE): GCVE-0-2016-1283
GCVE (VulDB): GCVE-100-80040
SecurityFocus: 79825
SecurityTracker: 1034555
Vulnerability Center: 57950 - PCRE 8.38 Remote DoS and Other Unspecified Impact via a Crafted Regular Expression, High

See also: 🔍

Entryinfo

Created: 01/03/2016 13:26
Updated: 07/02/2022 08:22
Changes: 01/03/2016 13:26 (39), 01/27/2018 12:40 (26), 07/02/2022 08:14 (4), 07/02/2022 08:19 (11), 07/02/2022 08:22 (2)
Complete: 🔍
Cache ID: 216::103

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