VDB-104981 · CVE-2017-9801 · BID 100082

Apache Commons Email 1.0/1.1/1.2/1.3/1.4 Subject Linebreak SMTP input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$5k-$25k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Apache Commons Email 1.0/1.1/1.2/1.3/1.4. This affects an unknown function of the component Subject Handler. The manipulation as part of Linebreak leads to input validation (SMTP). This vulnerability is documented as CVE-2017-9801. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Apache Commons Email 1.0/1.1/1.2/1.3/1.4 and classified as critical. This issue affects some unknown functionality of the component Subject Handler. The manipulation as part of a Linebreak leads to a input validation vulnerability (SMTP). Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

When a call-site passes a subject for an email that contains line-breaks in Apache Commons Email 1.0 through 1.4, the caller can add arbitrary SMTP headers.

The bug was discovered 08/01/2017. The weakness was released 08/07/2017 (Website). The advisory is shared at lists.apache.org. The identification of this vulnerability is CVE-2017-9801 since 06/21/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/07/2021).

The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $5k-$25k.

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 SecurityFocus (BID 100082†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: SMTP
Class: Input validation / SMTP
CWE: CWE-20
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/21/2017 🔍
08/01/2017 +41 days 🔍
08/01/2017 +0 days 🔍
08/07/2017 +6 days 🔍
08/07/2017 +0 days 🔍
08/08/2017 +1 days 🔍
01/07/2021 +1248 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: lists.apache.org
Researcher: Adam Williams
Status: Not defined

CVE: CVE-2017-9801 (🔍)
GCVE (CVE): GCVE-0-2017-9801
GCVE (VulDB): GCVE-100-104981
SecurityFocus: 100082 - Apache Commons Email CVE-2017-9801 SMTP Header Injection Vulnerability
SecurityTracker: 1039043

Entryinfo

Created: 08/08/2017 14:57
Updated: 01/07/2021 15:31
Changes: 08/08/2017 14:57 (60), 11/04/2019 16:59 (3), 01/07/2021 15:28 (2), 01/07/2021 15:31 (1)
Complete: 🔍
Cache ID: 216:9B1:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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