libxslt 1.1.33 transform.c xsltCopyText Variable use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in libxslt 1.1.33. This vulnerability affects the function xsltCopyText of the file transform.c. Such manipulation as part of Variable leads to use after free. This vulnerability is referenced as CVE-2019-18197. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in libxslt 1.1.33 and classified as critical. Affected by this issue is the function xsltCopyText of the file transform.c. The manipulation as part of a Variable leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be disclosed.

The weakness was published 10/18/2019. This vulnerability is handled as CVE-2019-18197 since 10/18/2019. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 276355 (TencentOS Server 3: libxslt (TSSA-2022:0062)), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the vulnerability database at Tenable (276355). Similar entry is available at VDB-153531. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 276355
Nessus Name: TencentOS Server 3: libxslt (TSSA-2022:0062)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: gitlab.gnome.org

Timelineinfo

10/18/2019 🔍
10/18/2019 +0 days 🔍
10/19/2019 +1 days 🔍
05/29/2026 +2414 days 🔍

Sourcesinfo

Advisory: RHSA-2020:0514
Status: Confirmed

CVE: CVE-2019-18197 (🔍)
GCVE (CVE): GCVE-0-2019-18197
GCVE (VulDB): GCVE-100-143960
See also: 🔍

Entryinfo

Created: 10/19/2019 07:35
Updated: 05/29/2026 07:02
Changes: 10/19/2019 07:35 (37), 10/19/2019 07:40 (17), 01/17/2024 09:20 (5), 11/23/2025 16:59 (22), 05/29/2026 07:02 (18)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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