lrzip 0.631 libzpaq/libzpaq.h bufRead::get null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability was found in lrzip 0.631. It has been rated as problematic. Affected by this vulnerability is the function bufRead::get in the library libzpaq/libzpaq.h. Performing a manipulation results in null pointer dereference. This vulnerability is reported as CVE-2017-8847. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, was found in lrzip 0.631. This affects the function bufRead::get in the library libzpaq/libzpaq.h. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

The bufRead::get() function in libzpaq/libzpaq.h in liblrzip.so in lrzip 0.631 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted archive.

The bug was discovered 05/07/2017. The weakness was disclosed 05/08/2017 (Website). It is possible to read the advisory at blogs.gentoo.org. This vulnerability is uniquely identified as CVE-2017-8847 since 05/08/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

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

The entries VDB-100946, VDB-100944 and VDB-100943 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.3
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/07/2017 🔍
05/08/2017 +1 days 🔍
05/08/2017 +0 days 🔍
05/08/2017 +0 days 🔍
05/09/2017 +1 days 🔍
12/06/2022 +2037 days 🔍

Sourcesinfo

Advisory: 67
Status: Not defined

CVE: CVE-2017-8847 (🔍)
GCVE (CVE): GCVE-0-2017-8847
GCVE (VulDB): GCVE-100-100947
OSVDB: - CVE-2017-8847 - Lrzip Project - Lrzip - Medium

See also: 🔍

Entryinfo

Created: 05/09/2017 08:36
Updated: 12/06/2022 08:45
Changes: 05/09/2017 08:36 (57), 09/24/2020 17:33 (2), 12/06/2022 08:45 (3)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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