Perl up to 5.24.2/5.25 Regular Expression memory corruption
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.1 | $0-$5k | 0.00 |
A vulnerability, which was classified as critical, was found in Perl up to 5.24.2/5.25 (Programming Language Software). Affected is some unknown functionality of the component Regular Expression. The manipulation 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:
Heap-based buffer overflow in the regular expression compiler in PERL before 5.24.3-RC1 and 5.26.x before 5.26.1-RC1 allows remote attackers to cause a denial of service (crash) via a crafted regular expression with the case-insensitive modifier.
The bug was discovered 09/15/2017. The weakness was presented 09/19/2017 as Bug 1492091 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is traded as CVE-2017-12837 since 08/11/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.
The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 103392 (Debian DSA-3982-1 : perl - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170576 (OpenSUSE Security Update for perl (openSUSE-SU-2017:3101-1)).
Upgrading to version 5.24.3-RC1 or 5.26.1-RC1 eliminates this vulnerability. A possible mitigation has been published 2 days after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (103392). See 106879 for similar entry.
Product
Type
Name
Version
- 5.0
- 5.1
- 5.2
- 5.3
- 5.4
- 5.5
- 5.6
- 5.7
- 5.8
- 5.9
- 5.10
- 5.11
- 5.12
- 5.13
- 5.14
- 5.15
- 5.16
- 5.17
- 5.18
- 5.19
- 5.20
- 5.21
- 5.22
- 5.23
- 5.24
- 5.24.0
- 5.24.1
- 5.24.2
- 5.25
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: 7.4VulDB Meta Temp Score: 7.2
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
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VulDB Reliability: 🔍
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Exploiting
Class: Memory corruptionCWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍
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: 103392
Nessus Name: Debian DSA-3982-1 : perl - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 53754
OpenVAS Name: Debian Security Advisory DSA 3982-1 (perl - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: Perl 5.24.3-RC1/5.26.1-RC1
Timeline
08/11/2017 🔍09/12/2017 🔍
09/15/2017 🔍
09/19/2017 🔍
09/19/2017 🔍
09/20/2017 🔍
09/21/2017 🔍
09/22/2017 🔍
01/13/2021 🔍
Sources
Advisory: Bug 1492091Researcher: Karl Williamson
Status: Not defined
Confirmation: 🔍
CVE: CVE-2017-12837 (🔍)
OVAL: 🔍
SecurityFocus: 100860 - Perl CVE-2017-12837 Heap Buffer Overflow Vulnerability
See also: 🔍
Entry
Created: 09/20/2017 23:17Updated: 01/13/2021 14:35
Changes: 09/20/2017 23:17 (79), 11/18/2019 08:06 (5), 01/13/2021 14:35 (2)
Complete: 🔍
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