Perl before 5.26.3 and 5.28.0 before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations.

According to the versions of the perl packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in Perl 5.18 through 5.26. A     crafted regular expression can cause a heap-based     buffer overflow, with control over the bytes     written.(CVE-2018-6797)

  - An issue was discovered in Perl 5.22 through 5.26.
    Matching a crafted locale dependent regular expression     can cause a heap-based buffer over-read and potentially     information disclosure.(CVE-2018-6798)

  - Heap-based buffer overflow in the pack function in Perl     before 5.26.2 allows context-dependent attackers to     execute arbitrary code via a large item     count.(CVE-2018-6913)

  - Perl before 5.26.3 and 5.28.0 before 5.28.1 has a     buffer overflow via a crafted regular expression that     triggers invalid write operations.(CVE-2018-18312)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is affected by the vulnerability described in GLSA-201909-01 (Perl: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Perl. Please review the       CVE identifiers referenced below for details.
  Impact :

    Please review the referenced CVE identifiers for details.
  Workaround :

    There is no known workaround at this time.

This update for perl fixes the following issues :

Secuirty issues fixed :

  - CVE-2018-18311: Fixed integer overflow with oversize     environment (bsc#1114674).

  - CVE-2018-18312: Fixed heap-buffer-overflow write /     reg_node overrun (bsc#1114675).

  - CVE-2018-18313: Fixed heap-buffer-overflow read if regex     contains \0 chars (bsc#1114681).

  - CVE-2018-18314: Fixed heap-buffer-overflow in regex     (bsc#1114686).

This update was imported from the SUSE:SLE-15:Update update project.

Security fix for CVE-2018-18311, CVE-2018-18312, CVE-2018-18313 and CVE-2018-18314

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for perl fixes the following issues :

Secuirty issues fixed :

CVE-2018-18311: Fixed integer overflow with oversize environment (bsc#1114674).

CVE-2018-18312: Fixed heap-buffer-overflow write / reg_node overrun (bsc#1114675).

CVE-2018-18313: Fixed heap-buffer-overflow read if regex contains \0 chars (bsc#1114681).

CVE-2018-18314: Fixed heap-buffer-overflow in regex (bsc#1114686).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Jayakrishna Menon discovered that Perl incorrectly handled Perl_my_setenv. An attacker could use this issue to cause Perl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-18311)

Eiichi Tsukata discovered that Perl incorrectly handled certain regular expressions. An attacker could use this issue to cause Perl to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. (CVE-2018-18312)

Eiichi Tsukata discovered that Perl incorrectly handled certain regular expressions. An attacker could use this issue to cause Perl to crash, resulting in a denial of service. (CVE-2018-18313)

Jakub Wilk discovered that Perl incorrectly handled certain regular expressions. An attacker could use this issue to cause Perl to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. (CVE-2018-18314).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Multiple vulnerabilities were discovered in the implementation of the Perl programming language. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2018-18311     Jayakrishna Menon and Christophe Hauser discovered an     integer overflow vulnerability in Perl_my_setenv leading     to a heap-based buffer overflow with attacker-controlled     input.

  - CVE-2018-18312     Eiichi Tsukata discovered that a crafted regular     expression could cause a heap-based buffer overflow     write during compilation, potentially allowing arbitrary     code execution.

  - CVE-2018-18313     Eiichi Tsukata discovered that a crafted regular     expression could cause a heap-based buffer overflow read     during compilation which leads to information leak.

  - CVE-2018-18314     Jakub Wilk discovered that a specially crafted regular     expression could lead to a heap-based buffer overflow.

ID	Name	Product	Family	Severity
131491	EulerOS Virtualization for ARM 64 3.0.3.0 : perl (EulerOS-SA-2019-2326)	Nessus	Huawei Local Security Checks	critical
128590	GLSA-201909-01 : Perl: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
123159	openSUSE Security Update : perl (openSUSE-2019-1029)	Nessus	SuSE Local Security Checks	critical
120786	Fedora 28 : 4:perl (2018-ca03363d57)	Nessus	Fedora Local Security Checks	critical
120656	Fedora 29 : 4:perl (2018-9dbe983805)	Nessus	Fedora Local Security Checks	critical
120189	SUSE SLED15 / SLES15 Security Update : perl (SUSE-SU-2018:4187-1)	Nessus	SuSE Local Security Checks	critical
119863	openSUSE Security Update : perl (openSUSE-2018-1595)	Nessus	SuSE Local Security Checks	critical
119337	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Perl vulnerabilities (USN-3834-1)	Nessus	Ubuntu Local Security Checks	critical
119290	Debian DSA-4347-1 : perl - security update	Nessus	Debian Local Security Checks	critical

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