An improper input validation was found in function
__zzip_fetch_disk_trailer of ZZIPlib, up to 0.13.68, that could lead to a crash in __zzip_parse_root_directory function of zzip/ip.c.
Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.(CVE-2018-7726)

A memory leak was found in unzip-mem.c and unzzip-mem.c of ZZIPlib, up to v0.13.68, that could lead to resource exhaustion. Local attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.(CVE-2018-7727)

An out of bounds read was found in function zzip_disk_fread of ZZIPlib, up to 0.13.68, when ZZIPlib mem_disk functionality is used.
Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.(CVE-2018-7725)

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has zziplib packages installed that are affected by multiple vulnerabilities:

  - An improper input validation was found in function
    __zzip_fetch_disk_trailer of ZZIPlib, up to 0.13.68,     that could lead to a crash in
    __zzip_parse_root_directory function of zzip/zip.c.
    Remote attackers could leverage this vulnerability to     cause a denial of service via a crafted zip file.
    (CVE-2018-7726)

  - A memory leak was found in unzip-mem.c and unzzip-mem.c     of ZZIPlib, up to v0.13.68, that could lead to resource     exhaustion. Local attackers could leverage this     vulnerability to cause a denial of service via a crafted     zip file. (CVE-2018-7727)

  - An out of bounds read was found in function     zzip_disk_fread of ZZIPlib, up to 0.13.68, when ZZIPlib     mem_disk functionality is used. Remote attackers could     leverage this vulnerability to cause a denial of service     via a crafted zip file. (CVE-2018-7725)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

NIST reports (by search in the range 2017/01/01 - 2018/07/06) :

17 security fixes in this release :

- Heap-based buffer overflow in the __zzip_get32 function in fetch.c.

- Heap-based buffer overflow in the __zzip_get64 function in fetch.c.

- Heap-based buffer overflow in the zzip_mem_entry_extra_block function in memdisk.c.

- The zzip_mem_entry_new function in memdisk.c allows remote attackers to cause a denial of service (out-of-bounds read and crash) via a crafted ZIP file.

- The prescan_entry function in fseeko.c allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via crafted ZIP file.

- The zzip_mem_entry_new function in memdisk.c cause a NULL pointer dereference and crash via a crafted ZIP file.

- seeko.c cause a denial of service (assertion failure and crash) via a crafted ZIP file.

- A segmentation fault caused by invalid memory access in the zzip_disk_fread function because the size variable is not validated against the amount of file->stored data.

- A memory alignment error and bus error in the
__zzip_fetch_disk_trailer function of zzip/zip.c.

- A bus error caused by loading of a misaligned address in the zzip_disk_findfirst function.

- An uncontrolled memory allocation and a crash in the
__zzip_parse_root_directory function.

- An invalid memory address dereference was discovered in zzip_disk_fread in mmapped.c.

- A memory leak triggered in the function zzip_mem_disk_new in memdisk.c.

According to the versions of the zziplib package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - zziplib: out of bound read in     mmapped.c:zzip_disk_fread() causes     crash.(CVE-2018-7725)

  - zziplib: Bus error in     zip.c:__zzip_parse_root_directory() cause crash via     crafted zip file.(CVE-2018-7726)

  - zziplib: Memory leak in memdisk.c:zzip_mem_disk_new()     can lead to denial of service via crafted     zip.(CVE-2018-7727)

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 Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6298-1 advisory.

  - An issue was discovered in ZZIPlib 0.13.68. There is a memory leak triggered in the function     zzip_mem_disk_new in memdisk.c, which will lead to a denial of service attack. (CVE-2018-7727)

  - Infinite Loop in zziplib v0.13.69 allows remote attackers to cause a denial of service via the return     value zzip_file_read in the function unzzip_cat_file. (CVE-2020-18442)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

From Red Hat Security Advisory 2018:3229 :

An update for zziplib is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link (s) in the References section.

The zziplib is a lightweight library to easily extract data from zip files.

Security Fix(es) :

* zziplib: out of bound read in mmapped.c:zzip_disk_fread() causes crash (CVE-2018-7725)

* zziplib: Bus error in zip.c:__zzip_parse_root_directory() cause crash via crafted zip file (CVE-2018-7726)

* zziplib: Memory leak in memdisk.c:zzip_mem_disk_new() can lead to denial of service via crafted zip (CVE-2018-7727)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes linked from the References section.

An update for zziplib is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link (s) in the References section.

The zziplib is a lightweight library to easily extract data from zip files.

Security Fix(es) :

* zziplib: out of bound read in mmapped.c:zzip_disk_fread() causes crash (CVE-2018-7725)

* zziplib: Bus error in zip.c:__zzip_parse_root_directory() cause crash via crafted zip file (CVE-2018-7726)

* zziplib: Memory leak in memdisk.c:zzip_mem_disk_new() can lead to denial of service via crafted zip (CVE-2018-7727)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes linked from the References section.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3229 advisory.

  - zziplib: out of bound read in mmapped.c:zzip_disk_fread() causes crash (CVE-2018-7725)

  - zziplib: Bus error in zip.c:__zzip_parse_root_directory() cause crash via crafted zip file (CVE-2018-7726)

  - zziplib: Memory leak in memdisk.c:zzip_mem_disk_new() can lead to denial of service via crafted zip     (CVE-2018-7727)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Security Fix(es) :

  - zziplib: out of bound read in     mmapped.c:zzip_disk_fread() causes crash (CVE-2018-7725)

  - zziplib: Bus error in     zip.c:__zzip_parse_root_directory() cause crash via     crafted zip file (CVE-2018-7726)

  - zziplib: Memory leak in memdisk.c:zzip_mem_disk_new()     can lead to denial of service via crafted zip     (CVE-2018-7727)

This update for zziplib fixes the following issues :

Security issues fixed :

CVE-2018-16548: Avoid a memory leak from __zzip_parse_root_directory() which could lead to denial of service. (bsc#1107424)

CVE-2018-7727: Fixed a memory leak in unzzip_cat() (bsc#1084515).

Non-security issue fixed: Prevented division by zero by first checking if uncompressed size is 0. This may happen with directories which have a compressed and uncompressed size of 0. (bsc#1129403)

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.

According to the versions of the zziplib package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in ZZIPlib 0.13.68. An invalid     memory address dereference was discovered in     zzip_disk_fread in mmapped.c. The vulnerability causes     an application crash, which leads to denial of     service.(CVE-2018-7725 )

  - An issue was discovered in ZZIPlib 0.13.68. There is a     bus error caused by the __zzip_parse_root_directory     function of zip.c. Attackers could leverage this     vulnerability to cause a denial of service via a     crafted zip file.(CVE-2018-7726)

  - An issue was discovered in ZZIPlib 0.13.68. There is a     memory leak triggered in the function zzip_mem_disk_new     in memdisk.c, which will lead to a denial of service     attack.(CVE-2018-7727)

  - In ZZIPlib 0.13.67, there is a bus error caused by     loading of a misaligned address (when handling     disk64_trailer local entries) in
    __zzip_fetch_disk_trailer (zzip/zip.c). Remote     attackers could leverage this vulnerability to cause a     denial of service via a crafted zip     file.(CVE-2018-6541)

  - An issue was discovered in ZZIPlib through 0.13.69.
    There is a memory leak triggered in the function
    __zzip_parse_root_directory in zip.c, which will lead     to a denial of service attack.(CVE-2018-16548)

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.

ID	Name	Product	Family	Published	Updated	Severity
121051	Amazon Linux 2 : zziplib (ALAS-2019-1142)	Nessus	Amazon Linux Local Security Checks	1/10/2019	2/26/2020	medium
127251	NewStart CGSL CORE 5.04 / MAIN 5.04 : zziplib Multiple Vulnerabilities (NS-SA-2019-0059)	Nessus	NewStart CGSL Local Security Checks	8/12/2019	5/8/2024	medium
110969	FreeBSD : zziplib - multiple vulnerabilities (7764b219-8148-11e8-aa4d-000e0cd7b374)	Nessus	FreeBSD Local Security Checks	7/10/2018	4/21/2020	medium
119912	EulerOS 2.0 SP2 : zziplib (EulerOS-SA-2018-1423)	Nessus	Huawei Local Security Checks	12/28/2018	1/6/2021	medium
179939	Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS : ZZIPlib vulnerabilities (USN-6298-1)	Nessus	Ubuntu Local Security Checks	8/17/2023	8/17/2023	medium
118778	Oracle Linux 7 : zziplib (ELSA-2018-3229)	Nessus	Oracle Linux Local Security Checks	11/7/2018	4/14/2021	medium
118999	CentOS 7 : zziplib (CESA-2018:3229)	Nessus	CentOS Local Security Checks	11/16/2018	4/8/2021	medium
118535	RHEL 7 : zziplib (RHSA-2018:3229)	Nessus	Red Hat Local Security Checks	10/31/2018	4/27/2024	medium
119525	EulerOS 2.0 SP3 : zziplib (EulerOS-SA-2018-1397)	Nessus	Huawei Local Security Checks	12/10/2018	1/6/2021	medium
119205	Scientific Linux Security Update : zziplib on SL7.x x86_64 (20181030)	Nessus	Scientific Linux Local Security Checks	11/27/2018	7/1/2020	medium
132335	SUSE SLED12 Security Update : zziplib (SUSE-SU-2019:3341-1)	Nessus	SuSE Local Security Checks	12/20/2019	4/2/2024	medium
130698	EulerOS 2.0 SP5 : zziplib (EulerOS-SA-2019-2236)	Nessus	Huawei Local Security Checks	11/8/2019	4/15/2024	medium

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