VDB-109748 · CVE-2017-12111 · Qualys 176356

libxls 1.4 xls_addCell XLS File out-of-bounds write

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability, which was classified as critical, has been found in libxls 1.4. Affected by this issue is the function xls_addCell. The manipulation as part of a XLS File leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The software writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The bug was discovered 11/15/2017. The weakness was presented 11/20/2017 (Website). The advisory is shared for download at talosintelligence.com. This vulnerability is handled as CVE-2017-12111 since 07/31/2017. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 109065 (Debian DSA-4173-1 : r-cran-readxl - 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 local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176356 (Debian Security Update for r-cran-readxl (DSA 4173-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 6 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (109065). See 109747, 109763, 109764 and 109765 for similar entries.



CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector (Talos): 🔍



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

NVD Base Score: 🔍


Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 109065
Nessus Name: Debian DSA-4173-1 : r-cran-readxl - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 861429
OpenVAS Name: Debian Security Advisory DSA 4173-1 (r-cran-readxl - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍


07/31/2017 🔍
11/15/2017 +107 days 🔍
11/20/2017 +5 days 🔍
11/20/2017 +0 days 🔍
11/21/2017 +1 days 🔍
04/16/2018 +146 days 🔍
04/17/2018 +1 days 🔍
01/11/2023 +1730 days 🔍


Advisory: talosintelligence.com
Status: Not defined

CVE: CVE-2017-12111 (🔍)
See also: 🔍


Created: 11/21/2017 07:47 AM
Updated: 01/11/2023 07:53 AM
Changes: 11/21/2017 07:47 AM (64), 12/09/2019 08:32 AM (12), 01/11/2023 07:53 AM (14)
Complete: 🔍


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