PCRE up to 8.37 /(?J)(?'d'(?'d'\g{d}))/ Regex Pattern memory corruption
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
9.4 | $0-$5k | 0.00 |
A vulnerability classified as very critical has been found in PCRE up to 8.37 (Programming Tool Software). Affected is an unknown function of the file /(?J)(?'d'(?'d'\g{d}))/. The manipulation with the input value /(?J)(?d(?d\g{d}))/
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:
PCRE before 8.38 mishandles the /(?J)(?'d'(?'d'\g{d}))/ pattern and related patterns with certain recursive back references, 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, a related issue to CVE-2015-8392 and CVE-2015-8395.
The weakness was published 12/02/2015 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2015-8384 since 12/01/2015. 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 $0-$5k (estimation calculated on 06/28/2022).
The vulnerability scanner Nessus provides a plugin with the ID 89641 (Fedora 22 : mingw-pcre-8.38-1.fc22 (2016-f59a8ff5d0)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196440 (Ubuntu Security Notification for pcre3 vulnerabilities (USN-2943-1)).
Upgrading to version 8.38 eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (89641). Similar entries are available at 75660, 79370, 79371 and 79376.
Product
Type
Name
Version
- 8.0
- 8.1
- 8.2
- 8.3
- 8.4
- 8.5
- 8.6
- 8.7
- 8.8
- 8.9
- 8.10
- 8.11
- 8.12
- 8.13
- 8.14
- 8.15
- 8.16
- 8.17
- 8.18
- 8.19
- 8.20
- 8.21
- 8.22
- 8.23
- 8.24
- 8.25
- 8.26
- 8.27
- 8.28
- 8.29
- 8.30
- 8.31
- 8.32
- 8.33
- 8.34
- 8.35
- 8.36
- 8.37
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 9.8VulDB Meta Temp Score: 9.4
VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Memory corruptionCWE: CWE-119
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 89641
Nessus Name: Fedora 22 : mingw-pcre-8.38-1.fc22 (2016-f59a8ff5d0)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for pcre3 USN-2943-1
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
Exposure Time: 🔍
Upgrade: PCRE 8.38
Timeline
12/01/2015 🔍12/01/2015 🔍
12/02/2015 🔍
12/03/2015 🔍
02/16/2016 🔍
03/04/2016 🔍
06/28/2022 🔍
Sources
Advisory: FEDORA-2016-f59a8ff5d0Status: Not defined
Confirmation: 🔍
CVE: CVE-2015-8384 (🔍)
See also: 🔍
Entry
Created: 12/03/2015 09:43Updated: 06/28/2022 10:17
Changes: 12/03/2015 09:43 (43), 04/06/2019 08:51 (25), 06/28/2022 10:11 (2), 06/28/2022 10:17 (1)
Complete: 🔍
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